细菌留在了人体内。
人体皮肤上细菌(蓝色和绿色)的电脑绘画。
Computer artwork of bacteria (blue and green) on human skin.
人体干重中有10%来自于细菌。
此种细菌通常可通过深部体表伤口进入人体。
这种细菌进入人体后可以导致痢疾，经常还有血便。
When ingested, the bug can cause diarrhea, often with bloody stools.
细菌可能通过口进入人体。
PATBODNAR：细菌可以通过进入人体皮肤中即使最小的削减。
PAT BODNAR: Bacteria can enter the body through even the smallest cut in the skin.
细菌能够进入人体并引起疾病。
NO在原生动物、细菌、酵母、动物和人体的作用机制已有大量研究。
NO has been most studied in protozoa, bacteria, yeast, animal and human.
细菌便借此机会进入人体，引发疾病。
Bacteria would like to take this opportunity to enter the body, triggering the disease.
这些细菌大多是有益的，对人体维持正常的生理功能有重要的作用。
Majority of the resident bacteria are useful in promotion of human health.
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.
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.
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