例句與造句

1. In very aggressive environments , the material degradation and structural distress arising from steel corrosion can dramatically reduce the useful service life of structures , affect their strength , stability and safety , and indeed , even lead to premature failure
   在嚴(yán)苛的侵蝕性環(huán)境下，因鋼筋腐蝕所引起的材料劣化與結(jié)構(gòu)損害，會降低結(jié)構(gòu)壽命，影響其強(qiáng)度、穩(wěn)定度與安全性，而且導(dǎo)致提前毀壞。
2. It's difficult to find useful service life in a sentence. 用useful service life造句挺難的