In some schools the uniform is so strict that you get a detention if your tie knot is too loose.

有些学校对校服的要求非常严格，如果你的领带结太松，就会被留堂。

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You do something bad; you get a detention and have to stay after school the next day for an hour.

你做错了事，你就得受罚，一般是第二天放学后留校一小时。

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You do something bad; you get a detention and have to stay after school the next day for an hour.

你做错了事，你就得受罚，一般是第二天放学后留校一小时。

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