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它们象无鱼可打的沙漠中被侵蚀的地方一般古老。
They were as old as erosions in a fishless desert.
youdao
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偶联剂可保护界面免受水的应力侵蚀。
The coupling agent may protect the interface against stress corrosion by water.
youdao
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偶联剂可保护界面免受水的应力侵蚀。
The coupling agent may protect the interface against stress corrosion by water.
youdao