That must have cost you a tidy sum.

那必定让你花了一大笔钱.

《简明英汉词典》

She's put aside a tidy sum for her retirement.

她存了一笔相当可观的钱以备退休之用.

辞典例句

She must have paid a tidy sum for that house.

她买这幢房子想必花了一大笔钱.

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My new house cost me a tidy sum of money.

我买新房子花了不少钱.

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He's put aside a tidy sum for his retirement.

他存了一笔相当可观的钱以备退休之用.

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For the moment, it's making a tidy sum.

目前已经挣了一笔可观的收入.

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