在线英语听力室

【英语时差8,16】玉米大豆种植模式效益更好？2

时间：2015-11-10 05:27:35

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）

 These bacteria split the nitrogen atoms apart and combine them with other molecules1, making the nitrogen available to the plants that the bacteria are living on. In exchange, sugars produced by the plant’s photosynthesis2 fuel the process of nitrogen-fixation and enable the bacteria to grow. These bacteria not only help the plants they live on, but release useable nitrogen into the soil which is taken up by other plants, and in turn passed on to animals that eat those plants. The Maya knew that corn and beans grow well together, just as in this country some farmers rotate their crops, planting alfalfa or beans every few years to replenish3 the soil’s nitrogen.


分享到：


点击收听单词发音收听单词发音  

1 molecules 187c25e49d45ad10b2f266c1fa7a8d49     
分子( molecule的名词复数 )
参考例句：
  • The structure of molecules can be seen under an electron microscope. 分子的结构可在电子显微镜下观察到。
  • Inside the reactor the large molecules are cracked into smaller molecules. 在反应堆里，大分子裂变为小分子。
2 photosynthesis A2Czp     
n.光合作用
参考例句：
  • In apple trees photosynthesis occurs almost exclusively in the leaves.苹果树的光合作用几乎只发生在叶内。
  • Chloroplasts are the structures in which photosynthesis happens.叶绿体就是光合作用发生的地方。
3 replenish kCAyV     
vt.补充；(把…)装满；(再)填满
参考例句：
  • I always replenish my food supply before it is depleted.我总是在我的食物吃完之前加以补充。
  • We have to import an extra 4 million tons of wheat to replenish our reserves.我们不得不额外进口四百万吨小麦以补充我们的储备。

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。