收紧银根的英文：
tighten up monetary policy

tighten是什么意思：
v. （使）变紧；加强

They have tightened security along the border.
他们加强了边境的安全工作。

tighten or fasten by means of screwing motions.
通过连接动作来使变紧或扣紧。

Always counter with a wrench when tightening.
拧紧时，务必用扳手顶住。

monetary是什么意思：
adj. 货物的，钱的

monetary unit in Libya.
利比亚使用的货币单位。

Education in the wilderness is not a matter of monetary means.
荒凉地区的教育不是钱财问题。

Reversed transmission of the pressure for easing monetary condition
倒逼机制

policy是什么意思：
n. 方针，政策；办法
adj. 方针的；政策的

A fabian policy
缓兵之计

The objectives of monetary policy are the same as those of fiscal policy.
货币政策的目的和财政政策一样。

Our radical policy is invariable.
我们的基本政策是不变的。