已经支付的钱是无法收回的。

The money already paid is irretrievable.

《牛津词典》

这是很重要的，因为这个项目是无法收回的，一旦被撕碎。

This is important since the item is not recoverable once it has been shredded .

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另外，账龄分析表还可用作预估无法收回的账款金额的基础。

In addition, the schedule is used as the basis for estimating the amount of uncollectible accounts.

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