其它的都是搭便车的生物，主要是一些与我们共生的无害细菌。
The rest are all hitch-hikers, mainly harmless bacteria that have evolved with us.
伯明翰大学的科学家发现，以糖为生的无害细菌能产生氢气。
Scientists at the University of Birmingham have shown that harmless bacteria that feeds on sugar produces hydrogen gas.
他们发现在典礼前，即使在涂抹了大量消毒剂后，手上仍然存在大量的无害细菌。
They found that before the ceremony, and even after a slathering of sanitizer, hands were home to plenty of nonharmful bacteria.
这些细菌对人无害。
由无害的多种致病介质如病毒或细菌或来自这些介质的蛋白质组成的生物制品。
Biological preparations composed either of a harmless variety of a disease-causing agent such as a virus or bacteria, or of proteins derived from such an agent.
所以Barbeito和三位志愿者做了如下实验：他们连续73天不刮胡子，然后在胡子上喷洒一种无害的细菌，并证实在这种情况下，细菌比没有胡子的时候更难以清洗。
So Barbeito and three volunteers grew their own beards for 73 days, then sprayed them with harmless bacteria and demonstrated that it was harder to wash the germs out of a beard than off clean skin.
将被细菌吃掉的原油所占比重成为一个未知数。细菌吃石油本质上是将无害化合物提炼出来并将其纳入食物链。
An unknown percentage of the oil would have been eaten by bacteria, essentially rendering the compounds harmless and incorporating them into the food chain.
这会致使无害的皮肤寄生细菌进入皮肤内，在那儿它们可能成为危险的暂住细菌。
This allows harmless skin residents to go beneath the skin, where they can become dangerous transients.
这种治疗方法的美妙之处在于，它并不杀死细菌就能够使其变得无害。
The beauty of this approach is that we may be able to render the germ harmless without killing it.
经常接触污垢不仅无害，还会教会这些细菌群如何辨别有益的细菌和有害的病菌，她说。
Regular contact with grime, rather than being harmful, teaches these communities of bacteria how to tell the difference between friendly germs and harmful pathogens, she said.
通过共用玩具，厕所，毛巾等，群居孩童可接触到各种各样的细菌，病毒和别的有机物，有些是可以导致生病而有些是无害的。
Children can come in contact with all sorts of bacterial, viruses and other organisms as they share toys, toilets and towels. Some will make them sick others are harmless.
独有的纳米技术，使得克拉美钻石英石致密无隙，细菌无处藏身，可与食物直接接触，无毒无害。
Unique nanotechnology, the Cramer diamond stone density without gap, bacteria have no place to hide, direct contact with food, non-toxic harmless.
虽然一些细菌会引起食物中毒或传染疾病给人类，但大多数细菌对人类无害，而其中有许多反而有益。
Though some bacteria Can cause food poisoning and infectious diseases in humans, most are harmless and many are beneficial.
设计的其他转基因作物，含有来自普通细菌的DNA成分，使作物对吃树叶的昆虫有毒而对人类无害。
Other GM crops have been designed to include a few scraps of DNA from a common bacterium, rendering the plants toxic to leaf-chewing insects but not to humans.
简单地说，益生素是无害的细菌，能保护人体免遭有害细菌的侵袭。
Put simply, probiotics are harmless bacteria that help protect the human body from harmful bacteria.
本发明公开了无毒无害、无污染，能快捷、方便、去污、除臭、杀细菌，效果好的清洗禽畜肠肚剂的制备方法。
The invention discloses a method of preparing intestine cleaning agent with good effect of innocuity, no pollution, fastness, convenience, decontamination, deodorization, bacteria killing.
本发明公开了无毒无害、无污染，能快捷、方便、去污、除臭、杀细菌，效果好的清洗禽畜肠肚剂的制备方法。
The invention discloses a method of preparing intestine cleaning agent with good effect of innocuity, no pollution, fastness, convenience, decontamination, deodorization, bacteria killing.
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