HOW TO USE IT

1.got stuck卡壳A:What's up?You look so unhappy! B:I got stuck on this problem.It is such a touchy issue! A:Well,cheer up,I think you can make it. B:Thanks.I will try to figure it out. A:怎么啦?你看起来闷闷不乐的! B:我在这个问题上卡壳了,这真是个棘手的问题。A:振作点,我想你能想出办法来的。B:谢谢,我再试试看。