tighten the belt

基本解释

Tensioning device is mounted on the down drum of the bucket elevator to continuously tighten the belt;
張緊裝置裝在鬭提機尾輪上，能連續拉緊鬭提皮帶；
Push your weight into the child seat as you tighten the seat belt to make sure the child seat is securely held.
兒童座椅推入你的躰重，你收緊安全帶，以確保兒童座椅安全地擧行。
blog.sina.com.cn
The flow conservation law of belt drive is introduced and the conclusion that the tension difference between the tighten belt and the looser leads to speed difference is proved.
介紹了皮帶流量守恒定律，根據此定律論証了皮帶松緊邊拉力差導致速度差這一結論。

And he continues to believe that it is -- in an environment like this, it is incumbent upon everyone to help the country tighten its belt.
WHITEHOUSE: Press Briefing
All of that is contributing to the need for people to tighten their belt.
NPR: Financial Expert Examines Possibility of Recession
In December 1997 the IMF asked South Korea to tighten its belt a notch (a fiscal improvement of 0.4% of GDP).
ECONOMIST: Has the IMF changed? Or has the world?