Attack by scavengers and bacteria, chemicaldecay, 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 world's audiovisual heritage is endangered. Too much of it has already been lost through neglect of its value, chemicaldecay or technological obsolescence.