He received a car on his fifteenth birthday.

他在十五岁生日时收到了一辆车。

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We'd get a discount if we paid before the fifteenth of the month.

如果我们在当月十五号前付款，就享有折扣。

youdao

We'd get a discount if we paid before the fifteenth of the month.

如果我们在当月十五号前付款，就享有折扣。

youdao