to belt up
[phrase form: belt]
例子
The teacher signaled for the class to belt up and prepare for the lesson.
老师示意全班安静下来，准备上课。
02
系好安全带, 扣上安全带
to secure oneself in a vehicle by putting on a seat belt
例子
The mom reminded her kids to belt up before starting the car.
妈妈提醒她的孩子们在开车前系好安全带。
