目录 1．人体(the human body)2，化学有机体(chemical organization)3．皮肤系统(integumentary system)4、肌肉骨骼系统(musculoskeletal system)5．神经系统(nervous system)6．内分泌系统(endocri...
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这些细菌实际上就是硫化氢和二氧化碳的结合体，而这种化学反应产生的有机物质是更大的有机体的食物。
These bacteria actually combine the hydrogen sulfide with the carbon dioxide and this chemical reaction is what produces organic material which is the food for larger organisms.
并非所有正常存在于活的有机体中的化学物质都是无害的。
Not all chemicals normally present in living organisms are harmless.
细菌是自然界中最简单的有机体之一，然而许多细菌还能使用一种在感染过程中起到关键作用的化学“语言”相互交谈。
Bacteria are among the simplest organisms in nature, but many of them can still talk to each other, using a chemical "language" that is critical to the process of infection.
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