尽管研究人员并不确定细菌是如何识别出到空气中的氨，但他们已经有了某些假设关于细菌为何能产生粘液以回应挥发性的氨。
Although the researchers are not sure how bacteria detect airborne ammonia, they have some hypotheses about why bacteria produce slime in response to volatile ammonia.
尽管研究人员并不确定细菌是如何识别出到空气中的氨，但他们已经有了某些假设关于细菌为何能产生粘液以回应挥发性的氨。
Although the researchers are not sure how bacteria detect airborne ammonia, they have some hypotheses about why bacteria produce slime in response to volatile ammonia.
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