中译英…谁能帮我翻译几个句子？1、他是一个合格的机械师，但他后来却搞起了国际贸易。2、他在业余时间报名参加计算机基础知识的培训，但没能坚持到底。3、校长经过面试，选择了几个优秀的大学生从事教学工作。

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1.He is a qulified machinist, but later on he began to do international trade.2. He signed up to take part in the training of basic knowledge of puter in his spare time, but he didn't keep up to the end.3. After face to face test by the headmaster, he chose a few excellent college students to be engaged in teaching work.