例句與造句

1. Before constructing , should carry out the derusting and rust - proofing treatment on the steel construction surface , the ones that had already antirusted should remove surface dust or other incidentals
   施工前須對鋼結(jié)構(gòu)表面作除銹、防銹處理，已作防銹處理的應清除表面塵土或其它雜物。
2. It's difficult to find rust-proofing treatment in a sentence. 用rust-proofing treatment造句挺難的