tough bronze 双语例句
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1·Due to the reasons such as the long buried time, the change of the storage conditions after excavation, and so on, there exists a tough problem of preventing the ancient bronze relics from corrosion.
由于埋藏时间长及出土后存贮条件的改变等原因,使古代青铜器面临着严峻的腐蚀防护问题。
