We were glad she let us know she was safe.

　　她告訴我們她平安無(wú)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(wú)恙。

　　I thought I was on safe ground discussing music with her.

　　我以為與她一起討論音樂(lè )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(huì )需求新的軟件。