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
But this whole idea of the preservation of trace metals and the chemical remains of soft tissue is quite exciting.
但是残留的金属痕迹和软组织当中的化学残质的想法还是相当令人兴奋。
3
Chemical products for the preservation of the samples have higher requirements.