If you are to have an important exam, you'd better prepare one more pen in reserve.

如果你将要参加一场重要的考试的话，你最好准备多一支备用的笔。

youdao

200 police officers were held in reserve.

200名警察随时待命。

《牛津词典》

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》

Federal Reserve Chairman Ben Bernanke sounded more hopeful as he appeared Tuesday before the Joint Economic Committee in Congress.

VOA: special.2009.05.08

In the United States we have twelve Federal Reserve Banks but we have a Federal Open Market Committee.

在美国,我们有十二个联邦储备银行,但是我们有一个联邦公开市场委员会。

耶鲁公开课 - 金融市场课程节选

In the United States we did not have a central bank until 1913 when we created the Federal Reserve System.

在美国，我们直到1913年,创立了联邦储备银行制度。

耶鲁公开课 - 金融市场课程节选

Descendants of the cowboys he beat have disputed Baca's account of the fight in Reserve.

ECONOMIST: Latino heroes

Subsidies for staples depend on governments having enough money in reserve to cover the costs.

CNN: Middle East inflation soars

Another reason for the delays: Airlines keep too few planes and crew in reserve.

NPR: Holding Pattern: Flight Delays are Going Up, Up, Up