specialising
v.
专门从事，专攻( specialise的现在分词 );
例句:
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He went on to study music, specialising in the clarinet.
他继续学习音乐，主攻单簧管。
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He is a philologist, specialising in American poetry.
他是专攻美国诗歌的语文学家。
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There are some agencies now specialising in helping older people to find jobs which pay.
现在有些机构专门帮助年龄较大的人找有报酬的工作。
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She then trained as a barrister, specialising in tax.
来自BBC
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Mike Baker is a freelance journalist and broadcaster specialising in education.
来自BBC
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Paul Kitson is a lawyer specialising in personal injury cases involving cyclists.
来自BBC