Alf did this for over two years, and his fellow dustmen kept his secret.

两年多以来,艾尔弗一直这样, 他的同事也为他保守秘密.

新概念英语第三册

The dustmen were busy clearing up the snow on the road.

清洁工正在清除路上的积雪.

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Please distribute these brooms to the new dustmen.

请你把这几个扫把分发给那几位新来的清洁工.

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