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有一个男孩脾气很坏。为了教育他,父亲给了他一袋钉子,要求他每当发脾气的时候或跟别人吵架以后,就钉一根钉子在后院的篱笆上。
A boy has a bad temper. In order to educate him, his father gave him a bag of nails asking him to nail a nail on the backyard fence whenever he lost his temper or quarrel with others.