structural constituent造句
例句與造句
- A tough , insoluble protein substance that is the chief structural constituent of hair , nails , horns , and hoofs
角蛋白一種不溶解的較硬的蛋白物質(zhì),是頭發(fā)、指甲、角和蹄的主要結(jié)構(gòu)成分 - It's difficult to find structural constituent in a sentence. 用structural constituent造句挺難的