The safety belt is easy to fit as there's no need to bolt it to seat belt anchorage points.

这种安全带很容易安装，因为不需要把它拴在安全带固定点上。

《柯林斯英汉双解大词典》

Your safety belt must be fastened whenever the seat belt signs are on.

当安全带指示亮着的时候你必须系好安全带。

youdao

For example, if you're speaking on car safety, you can create a very powerful negative visualization by telling the story of someone who died because he didn't wear his seat belt.

比如，你的演讲是关于驾驶安全的，你可以弄一个很震撼的消极案例就像谁谁谁开车没系安全带结果出车祸死了。

youdao

She did not use any safety devices, such as a seat belt or parachute.

VOA: special.2011.06.12

"In seat belt safety, we know people are going to speed and one of the ways that we've reduced traffic deaths is we've added seat belts."

VOA: standard.2010.03.02

True, years of safety engineering and seat-belt-law enforcement have reduced road fatalities from 1.73 deaths per 100 million miles traveled in 1994 to 1.47 in 2005, but automakers think they can do better.

FORBES: Smart Dummies

The new laws cover a variety of areas, from texting and tanning beds to human trafficking and seat-belt safety.

CNN: STORY HIGHLIGHTS

The same ones who can't buckle a seat belt without watching a safety demo, I suppose.

CNN: Is TSA serious about letting people carry knives?