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(单词翻译)
The answer is: gravity. Gravity sets an upper limit on how high a mountain can be. Here’s why. Imagine you are the base of a mountain and you are holding a brick on your head. The top of the brick is the top of the mountain. Let’s add another brick or two. Maybe three or four more. How are you feeling now? Let’s add a hundred bricks. How about now? The taller a mountain is, the greater the pressure it exerts on its base. That’s because, thanks to gravity, all that weight is constantly pressing down on the lowest parts. After about five-and-a-half miles of mountain, the base is so squished it starts to turn into a fluid. That means you can’t go any higher. On Mars, however, gravity is roughly 2.7 times weaker than on Earth. That’s the same factor by which Olympic Mons is higher than Everest–about 2.7 times. Less gravity means less pressure on the base. So if you really want high mountains, go to the planet with the weakest gravity. The view will be terrific.
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roughly
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| adv.概略地,粗糙地,粗鲁地 | |
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however
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| adv.然而;conj.然而,可是,不过 | |
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Mars
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| n.火星,战争 | |
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any
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| adj.任何的;所有的 | |
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planet
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| n.行星 | |
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bricks
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| n.砖( brick的名词复数 );砖块;积木;可靠的朋友 | |
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higher
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| adj.高高的;高级的;上级的;高等的;高的( high的比较级 );高尚的;高地的;高级的 | |
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turn
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| v.(使)转动,(使)旋转;(使)变化;n.一次机会 | |
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weaker
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| adj.弱的( weak的比较级 );微弱的;无说服力的;淡的 | |
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factor
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| n.因素;要素;因子;因数;系数 | |
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constantly
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| adv.不变地,不断地,时常地 | |
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parts
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| n.部( part的名词复数 );一部分;零件;角色 | |
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Olympic
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| adj.奥林匹克的;n.奥林匹克运动会 | |
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because
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| conj.由于,因为 | |
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mountain
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| n.山,高山;(pl.)山脉;大量 | |
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upper
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| adj.上面的,较高的;上级的,上院的;穿在外面的;北部的,地表的;后期的;n.鞋帮 | |
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high
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| adj.高的,高度的,高级的,高尚的;adv.高高地 | |
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Miles
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| n.英里( mile的名词复数 );很多;一英里赛跑;大面积 | |
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holding
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| n.佃户租种的土地;所有物(如土地、债券、股份等);私有财产;(因其热情、精力或决心等)阻拦不住某人v.拿( hold的现在分词);认为;包含;容纳 | |
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base
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| vt.以...为根据;n.基部;基地;基础;adj.基本的,基础的 | |
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means
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| n.方法,手段,折中点,物质财富 | |
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brick
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| n.砖;vt.用砖砌,用砖堵住 | |
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another
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| adj.另外的,再一,不同的;prep.另外一个,另一个人,同类的东西;pron.另一个,另外一个人,他人 | |
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terrific
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| adj.可怕的,极好的,非常的 | |
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sets
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| n.凝固( set的名词复数 );(一)套;布景;集v.放( set的第三人称单数 );安插;树立;安排 | |
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feeling
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| n.感觉,知觉,感情 | |
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limit
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| vt.限制;限定;n.界限;限度 | |
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weakest
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| adj.弱的( weak的最高级 );微弱的;无说服力的;淡的 | |
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answer
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| n.答案;回答;v.回答 | |
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less
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| adj.更少的,更小的;adv.更少地,更小地;n.少量,次要;prep.减 | |
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exerts
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| v.用(力)( exert的第三人称单数 );尽(力);运用;发挥 | |
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imagine
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| vt.想象,设想;料想,猜想 | |
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pressure
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| n.压力,压迫,压强;vt.迫使,使增压,密封 | |
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weight
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| n.重量,体重,重担 | |
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pressing
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| adj.紧迫的,紧急的;迫切的,急迫的;恳切的n.压,压制;模压制品;力主;唱片v.压,压迫(press的现在分词) | |
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hundred
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| num.百,一百;(pl.)许多;adj.一百的;许多 | |
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Mountains
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| n.山,山岳( mountain的名词复数 );山脉;群山 | |
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view
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| n.风景;视野,观点,见解;vt.观看,注视;考虑 | |
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top
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| n.顶,顶端;首位;顶点;adj.最高的;顶上的 | |
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fluid
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| n.流体,液体;adj.流体的,流动的 | |
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maybe
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| adv.可能,大概,也许 | |
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starts
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| v.出发,开始( start的第三人称单数 );起动;提出(问题);开办 | |
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earth
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| n.陆地;大地;地球 | |
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gravity
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| n.重力,引力,地心引力 | |
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add
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| vt.增加;添加;补充说;vi. 加,加起来;增添 | |
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lowest
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| adj.最低的,最底下的,最小的 | |
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really
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| adv.真正地,实际上,实际上;很;实,其实 | |
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