这辆车的碰撞避免辅助系统在紧急情况下自动刹车。

The car's ___CAA automatically brakes in emergency situations.

我们加入了CAA，这样在旅行中遇到车辆故障时可以获得帮助。

We joined ___CAA so we can get help if our car has trouble during trips.

英国民航局负责监管航空安全标准。

The ___CAA is responsible for overseeing aviation safety standards in the UK.