衣藻只有在环境十分恶劣的时候才会激活这种基因——比如说在阳光和营养物都不足的时候。
In Chlamydomonas, the gene only gets switched on when environmental conditions are poor-for instance, when sunlight or nutrients are scarce.
这条很陡的下坡公路，覆盖着早晨的灰尘，在阳光和影子的交错下非常壮观，十分静谧。。。
''The steep swoop of highroad lay, in its cool morning dust, splendid with patterns of sunshine and shadow, perfectly still. . . .
粉红色和黄绿色的椅子和哈密瓜色的沙发十分相配，让房间显得阳光又温暖。
It is a warm and sunny room and the pink is a perfect compliment to the chartreuse chairs and melon sofa.
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