1、 useful在线翻译
2、 She makes herself generally useful、她能干各式各样的工作。
3、 She gave us some useful information、她给了我们一些很有用的信息。
4、 He's a useful member of the team、他是该队的一名强手。
5、 His wife is very useful at cooking、他的妻子擅长烹调。
6、 That is a useful knife、那是把有用的小刀。