adj. photosynthetic
已经知道一些光合细菌能够利用红外光，但是和植物和蓝细菌不同，这些微生物光合的时候不能产生氧气。
Some photosynthetic bacteria are known to use infrared light, but—in contrast to plants andcyanobacteria—these microorganisms do not produce oxygen.
在地球早期，整个星球上有无数的光合细菌在进行光合作用。
In Earth's early days, all over the planet countless photosynthetic bacteria performed photosynthesis.
这个谜题的答案在于早期光合生命形式的新陈代谢活动，这种活动缓慢但一定改变了地球大气的化学成分。
The answer to this riddle lies in the metabolic activity of early photosynthetic life-forms that slowly but surely transformed the chemical composition of Earth's atmosphere.
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