Attack by scavengers and bacteria, chemical decay, and destruction by erosion and other geologic agencies make the odds against preservation very high.
食腐动物和细菌的攻击、化学性腐烂,以及侵蚀和其他地质作用的破坏,导致无法保存的可能性非常大。
2
The bacteria in plaque make poisons that attack the gums.
牙菌斑中的细菌会产生损伤牙龈的毒素。
3
The bane of biofilms: Bacteria bound together in a protective matrix tend to resist viral attack.