从事于的用法和样例:
例句
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他从事于物理研究/这一课题许多年了。
He has worked at physics/the topic for many years.
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他从事于语言学的研究。
He is engaged in studies in linguistics.
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他从事于医学的研究。
He was engaged in medical research.
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电影界从事于电影业的人们
The people employed in the movie industry.
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