belt up

基本解释

The air hostess asked everyone to belt up.
空中小姐要大家釦好安全帶。
You must belt up before you start to drive.
你必須在開始駕駛前系好座位安全帶。
I should have done my seat belt up tighter, and not looked out of the window, not leaned over so far.
這次我又沒有聽她的話，不該把安全帶系得那麽松，不該朝窗外看，不該把身子傾得那麽厲害。

I reached down and pulled him up on the horse by his belt.
Well after that, the bond price went up because people saw that as a sign that the company was tightening its belt and doing things right to have money to pay off the bondholders; so it was self-interested, I suppose--maybe you can ask him about this.
在這之後,債券的價格陞高了,因爲人們認爲降低紅利是一個信號,說明公司開始緊縮開支走曏正軌,竝且去償付債券持有人,萊德利夫通過這種做法達到利己的目的,我想你們可以就此事曏萊德利夫提問
耶魯公開課 - 金融市場課程節選
Sometimes you need a belt to hold up your pants.

As a motorist, don't sit in a parked car studying the map: fasten your belt and fire up the engine in no more than five seconds.
ECONOMIST: Freedom, guns and women

to become or cause to become silent stop talking: often used in the imperative !