David has been invited to lecture about modern drama.

大卫已受聘讲授现代戏剧.

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Alton has been invited to lecture about modern drama next term.

下学期奥尔顿受聘讲授现代戏剧.

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The policeman let me off with a lecture about speeding.

那警察给我讲了一大顿注意车速的道理之后才让我走.

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The teacher is giving a lecture about the launch of Shenzhou V.

老师给中外学生讲解神州五号成功发射知识.

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What did he lecture about?

讲哪一方面的事情?

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