by the way: 顺便说
Love to Bob, by the way.
请便代向鲍勃问好。
Not bad. By the way, how is your mother? Is she all right?
还好。顺便问一下，你母亲怎么样？她好吗？

different from: 与…不同
She believes that she has a fight to be herself and to be different from what others might expect of her.
她相信她有权走自已的路，而不是别人指望她怎么样，她就怎么样。

have fun: 玩的开心
Have fun while you can. The hard times is just around the corner.
趁能玩的时候多玩玩吧。辛苦的时辰不久就会到的
Have fun! ie Enjoy yourself!
尽情玩儿吧！

work out: 有用
I believe that you can work out this problem by yourself.
我相信你自己能做出这道题的。
We can find a way to work out this problem.
我们可以找到解决这个问题的方法。