buckle up

US /ˈbʌk.əl ʌp/
UK /ˈbʌk.əl ʌp/
"buckle up" picture
1.

系好安全带, 扣好安全带

to fasten your seatbelt in a vehicle or aircraft

:
Please buckle up before we start the car.
请在启动汽车前系好安全带
The flight attendant reminded everyone to buckle up.
空乘提醒大家系好安全带
2.

做好准备, 严阵以待

to prepare for a difficult situation or period

:
We need to buckle up for a tough quarter ahead.
我们需要做好准备迎接未来艰难的一个季度。
The company is telling employees to buckle up for major changes.
公司告诉员工要做好准备应对重大变化。