We were glad she let us know she was safe.
她告訴我們她平安無事，我們很高興。
The street is not safe for children to play in.
孩子在大街上玩不安全。
The child was found safe and well.
小孩找到了，安然無恙。
I thought I was on safe ground discussing music with her.
我以為與她一起討論音樂是穩妥的。
It's safe to assume there will always be a demand for new software.
可以肯定地認為，人們總會需求新的軟件。