问题描述: she is senior to me by tow years这句中 by是怎么回事 1个回答 分类:英语 2014-10-27 问题解答: 我来补答 表示 大我两级 by 表示程度,比如 子弹擦过心脏2mmThe bullet passed his heart by 2 mm. 展开全文阅读