例句：
1、I do not need to and sad, so I do not need anything.
我也不需要为此而伤心，所以我不需要任何东西。
2、I have no right to be sad.
然而我的悲伤是无关紧要的。
3、It's a sad fact that many of those killed were children.
让人难以接受的是遇难者中很多是孩子。
4、It is very sad when children feel unwanted.
小孩觉得没有人爱是很悲惨的。