细菌结构没有叶绿体，也没有线粒体，大部分不能进行光合作用。部分细菌（如蓝藻）细胞膜上拥有叶绿素，可进行光合作用。
双语例句原声例句
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如果该椭圆结构曾是细菌，它们也该在所有区域出现。
If the oval structures were once bacteria, they should be everywhere, too.
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而如果该椭圆结构曾是细菌，它们也该在所有区域出现。
And if the oval structures were once bacteria, they should be everywhere, too.
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正因为这样特殊的结构，细菌不能利用木糖醇取得能量。
Because of its distinctive structure, bacteria cannot utilize Xylitol for energy.
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I'm not going to talk about them in detail but please look at that to remind yourself of those kinds of specialized sub-cellular units which are present in cells in humans but not present in bacteria.
我就不再赘述了,不过请你们看看书,回忆一下哪些特化的亚细胞结构单元,是人类细胞有,而细菌没有的
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- 来自原声例句