1.Historical evidence suggests that failing to rein in ‘easy money' policies risks fueling an economic bubble and even hyper-inflation
rein in 控制;放慢;止住
Many people have begun looking for long-term ways to rein in spending.
很多人已經開始尋找控制開支的長遠方式 。
You must learn to rein in your temper.
你必須學會控制你的脾氣 。