It's a sad fact that many of those killed were children.
讓人難以接受的是遇難者中很多是孩子。
It was sad to see them go.
看著他們離去，真讓人難過(guò)。
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。