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【英语时差8,16】绿色植物能预知未来?(下)

时间:2015-11-30 07:08来源:互联网 提供网友:yajing   字体: [ ]
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The scientists guessed that the new seedlings1 were sensing the presence of neighboring plants by detecting the characteristic color of light reflected sideways from leaves of the neighboring plants. That characteristic color contains a very small amount of red light and a larger amount of what is known to botanists2 as far-red light. To test their guess, the scientists in effect blinded some new seedlings to that far-red light by placing clear blue cylinders3 around their stems. The accelerated growth was reduced or abolished. This striking result suggests that light scattered4 sideways from adjacent leaves provides an early signal of competition to young green plants. The young plants react to the signal by accelerating their stem growth to get a head start in the race for light.


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1 seedlings b277b580afbd0e829dcc6bdb776b4a06     
n.刚出芽的幼苗( seedling的名词复数 )
参考例句:
  • Ninety-five per cent of the new seedlings have survived. 新栽的树苗95%都已成活。 来自《现代汉英综合大词典》
  • In such wet weather we must prevent the seedlings from rotting. 这样的阴雨天要防止烂秧。 来自《现代汉英综合大词典》
2 botanists 22548cbfc651e84a87843ff3505735d9     
n.植物学家,研究植物的人( botanist的名词复数 )
参考例句:
  • Botanists had some difficulty categorizing the newly found plant. 植物学家们不大容易确定这种新发现的植物的种类。 来自辞典例句
  • Botanists refer this flower to the rose family. 植物学家将这花归入蔷薇科。 来自辞典例句
3 cylinders fd0c4aab3548ce77958c1502f0bc9692     
n.圆筒( cylinder的名词复数 );圆柱;汽缸;(尤指用作容器的)圆筒状物
参考例句:
  • They are working on all cylinders to get the job finished. 他们正在竭尽全力争取把这工作干完。 来自《简明英汉词典》
  • That jeep has four cylinders. 那辆吉普车有4个汽缸。 来自《简明英汉词典》
4 scattered 7jgzKF     
adj.分散的,稀疏的;散步的;疏疏落落的
参考例句:
  • Gathering up his scattered papers,he pushed them into his case.他把散乱的文件收拾起来,塞进文件夹里。
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