问题描述： 英语翻译 我在这道题上花了3小时 1个回答 分类：综合 2014-10-21 问题解答： 我来补答 I have spent three hours on this problem.I have spent three hours on this problem.I have worked on this problem for three hours.这几种译法都可以. 展开全文阅读
