4. come across sb 偶然遇见 5. act on sth 依……行事 eg. Each student should act on the rules and regulations of the school. / 每个学生都应该遵守学校的规章制度。 6. add to / add up to 加上/ 总计达 eg. The number of the patients added up to three hun...
(1)it is/was convenient for sb.to do sth.对于某人来说做某事是方便的 sth.be convenient for/to sb.某物对某人来说是方便的 sth.be convenient for sth.某物离某物很近 (2)convenience n.方便;便利 at one's convenience在某人方便的时候 【例句】①If it is conve...
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