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夏天的时候,如果人们在太阳底下暴晒,很容易就被晒黑、晒伤,但是很少有被晒得黝黑的植物。原来,植物的能量来自太阳,它们需要经常晒太阳,当紫外线特别强烈时,植物也会制造“防晒霜”来保护自己。“防晒霜”是植物体内某些特殊分子的结合,这些分子发生反应,产生一种可以阻挡紫外线的化合物。这种化合物在阻挡紫外线的同时,也允许阳光中其他有益的成分穿过,这样就能在保护植物的同
In the summer, if people are exposed to the sun, they are easily tanned and sunburn, but few tanned plants. It turned out that the energy of plants from the sun, they need to often sun, when the UV is particularly strong, plants will also create “sunscreen ” to protect themselves. “Sunscreen ” is the combination of certain special molecules in plants that react to produce a compound that blocks UV light. This compound, while blocking the UV rays, also allows other beneficial ingredients in the sun to pass through, so that when the plant is protected