The money was being kept in reserve for their retirement.

他们把钱存着以备退休后使用。

《牛津词典》

He poked around the top of his cabinet for the bottle of whisky that he kept in reserve.

他在壁橱的上面翻找他留的那瓶威士忌。

《柯林斯英汉双解大词典》

The mistakes of using the time kept in reserve in power productionpresently are discussed, and the correct methods are proposed in this paper.

文章讨论了目前在电力生产中使用机动时间的错误习惯，并提出了正确做法。

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And it is widely predicted that the central bank will soon announce measures to curb credit growth by increasing the ratio of bank deposits that must be kept with it in reserve.

ECONOMIST: The economy just grows and grows

And if anyone decides to challenge the system, the Party has kept ample power in reserve, making sure it maintains a tight grip on the military and the security services, the ultimate guarantors of its rule.

WSJ: The Hidden Power of China's Communist Party

As of 2003, Beijing kept 600 tons of gold in reserve.

FORBES: Debating The True Value Of The Chinese Yuan