Jack ate like nobody's business but never put on any weight.

杰克吃得很多,但从不长胖.

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My head hurts like nobody's business.

我的头疼死了.

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Since the pupils came into the shops, these picture - books have been selling like nobody's business.

自从这些小学生光顾商店以来, 这些小人书销很快.

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