搜索关注在线英语听力室公众号:tingroom,领取免费英语资料大礼包。
(单词翻译)
In other words, ice absorbs heat from the water.
换言之,冰块会从水中吸收热量。
As the water molecules1 lose energy, they begin to slow down, and consequently to cool.
当水分子流失热量后其移动速度回放缓,温度逐渐降低。
So, it’s kind of the opposite of what we might think: when we put ice in water, the ice doesn’t give its cold to the water, it takes heat from the water.
这可能跟我们假设的恰恰相反:把冰放入水中,冰不会将低温转移到水中,而是从水里吸收热量。
The cooling process actually happens in stages.
这一冷却过程其实是分阶段进行的。
Because ice floats, it cools the water near the top of the glass first.
由于冰块会漂浮,因此最上层的水会先降温。
As the top layer of water cools, its density2 increases, causing it to sink to the bottom.
当上层的水冷却后,它的密度会增加,上层的水会下沉到底部。
The lower layer, less dense3 and therefore more buoyant, floats to the top and is cooled in turn.
底部的水因密度较小会上浮,然后再被冷却,不断循环反复。
收听单词发音
1
molecules
|
|
| 分子( molecule的名词复数 ) | |
参考例句: |
|
|
|
2
density
|
|
| n.密集,密度,浓度 | |
参考例句: |
|
|
|
3
dense
|
|
| a.密集的,稠密的,浓密的;密度大的 | |
参考例句: |
|
|
|
本文本内容来源于互联网抓取和网友提交,仅供参考,部分栏目没有内容,如果您有更合适的内容,欢迎 点击提交 分享给大家。