从事某种活动或工作者 er
从事某种活动的人 persons engaged in some particular pursuits
从事某种工作或活动 work at ; do ; engage in
在《教父II》中他接着饰演了这私人物，并变成他私人演出从事某种活动中的一个最为知名的角色。
In "Godfather II" he then played in this private matter, and into his private performances engage in certain activities in one of the most well-known role.
18亿十八岁以下的儿童从事某种形式的生产活动。
318 million children under 18 work in some form of productive activity.
在他看来，实业和金融是不值得绅士从事的活动，呀，虽然许多人由于境况所逼又不得不在某种程度上参与这种活动。
Industry and finance seem to him to be activities unworthy of gentlemen, although, alas, many are forced by exigencies of circumstance to take some part in them.
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