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SSS 2010-01-12

时间:2010-05-20 01:33来源:互联网 提供网友:mark@li   字体: [ ]
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    (单词翻译:双击或拖选)

If you’ve ever had a garden or grown flowers in a window box, you’ve probably heard that you shouldn’t water your plants at high noon because their leaves might scorch1. Now a study in a journal called New Phytologist confirms that water droplets2 can focus sunlight to the point that it burns, a finding that applies to plants and to people.

 Check any gardening blog and the question of whether water can burn comes up with some regularity3. But the problem had never been thoroughly4 tested. So scientists at Eotvos University in Budapest decided5 to do just that. And they found that the results depend on how hairy you are.

On leaves that are really smooth, like those from a maple6 tree, water doesn’t do much damage. But leaves that have tons of tiny hairs, like a fern, can hold spherical7 water droplets in focus above a leaf’s surface. Those drops act like mini magnifying glasses, focusing the sunbeams on an area that will subsequently fry.

And the same is true on you. Cooling off in the pool might seem like a stellar idea. But the resulting water droplets, propped8 up by your body hair, poolside, could turn you from lounger to lobster9.

 —Karen Hopkin


 


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1 scorch YZhxa     
v.烧焦,烤焦;高速疾驶;n.烧焦处,焦痕
参考例句:
  • I could not wash away the mark of the scorch.我洗不掉这焦痕。
  • This material will scorch easily if it is too near the fire.这种材料如果太靠近炉火很容易烤焦。
2 droplets 3c55b5988da2d40be7a87f6b810732d2     
n.小滴( droplet的名词复数 )
参考例句:
  • Droplets of sweat were welling up on his forehead. 他额头上冒出了滴滴汗珠。 来自辞典例句
  • In constrast, exhaled smoke contains relatively large water droplets and appears white. 相反,从人嘴里呼出的烟则包含相当大的水滴,所以呈白色。 来自辞典例句
3 regularity sVCxx     
n.规律性,规则性;匀称,整齐
参考例句:
  • The idea is to maintain the regularity of the heartbeat.问题就是要维持心跳的规律性。
  • He exercised with a regularity that amazed us.他锻炼的规律程度令我们非常惊讶。
4 thoroughly sgmz0J     
adv.完全地,彻底地,十足地
参考例句:
  • The soil must be thoroughly turned over before planting.一定要先把土地深翻一遍再下种。
  • The soldiers have been thoroughly instructed in the care of their weapons.士兵们都系统地接受过保护武器的训练。
5 decided lvqzZd     
adj.决定了的,坚决的;明显的,明确的
参考例句:
  • This gave them a decided advantage over their opponents.这使他们比对手具有明显的优势。
  • There is a decided difference between British and Chinese way of greeting.英国人和中国人打招呼的方式有很明显的区别。
6 maple BBpxj     
n.槭树,枫树,槭木
参考例句:
  • Maple sugar is made from the sap of maple trees.枫糖是由枫树的树液制成的。
  • The maple leaves are tinge with autumn red.枫叶染上了秋天的红色。
7 spherical 7FqzQ     
adj.球形的;球面的
参考例句:
  • The Earth is a nearly spherical planet.地球是一个近似球体的行星。
  • Many engineers shy away from spherical projection methods.许多工程师对球面投影法有畏难情绪。
8 propped 557c00b5b2517b407d1d2ef6ba321b0e     
支撑,支持,维持( prop的过去式和过去分词 )
参考例句:
  • He sat propped up in the bed by pillows. 他靠着枕头坐在床上。
  • This fence should be propped up. 这栅栏该用东西支一支。
9 lobster w8Yzm     
n.龙虾,龙虾肉
参考例句:
  • The lobster is a shellfish.龙虾是水生贝壳动物。
  • I like lobster but it does not like me.我喜欢吃龙虾,但它不适宜于我的健康。
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