我需要把货物彻底清理一下，因为时间长了，发现有的盐蚀了。求翻译

I need to clean up the goods thoroughly, because of the long time, i found some of the corrosion of salt.

I found some of the cargo have been subject to salt corrosion due to long period of deposite when I was cleaning them up.

我想你的问题主要在于“盐蚀”二字的翻译吧，其他的说法就很多了，仅供你参考。

盐蚀
corrosion by salt 或 salt corrosion