He is a philologist, specializing in American poetry.

他是专攻美国诗歌的语文学家。

He went on to study music, specializing in the clarinet.

他继续学习音乐，专攻单簧管。

There are some agencies now specializing in helping older people to find jobs which pay.

现在有一些机构专门帮助年纪较大的人找到有酬工作。

Worst of all, for a playwright specializing in characters who use the vernacular, he has a tin ear for dialogue.

最糟的是，作为一个专门刻画使用方言人物的剧作家，他在对话方面没有鉴赏力。

I do want to be a film director specializing in, like, thrillers, kind of horror.

我希望能够成为专门拍摄惊险或恐怖片的电影导演。