飞机已安全到达目的地了。

Fēijī yǐ ānquán dàodá mùdìdì le.

The plane has already reached its destination safely.

这里很安全，你放心吧。

Zhèlǐ hěn ānquán, nǐ fàngxīn ba.

It is very safe here, don't worry.

开车的时候要注意安全。

Kāichē de shíhou yào zhùyì ānquán.

When driving, you must pay attention to safety.