光彩人生的意义:succeed in doing sth 什么意思?

succeed in doing sth 什么意思? spend ... in doing sth这个in doing sth是什么语? be behind in doing sth have trouble in doing sth be behind in doing sth是什么意思啊 get all out in doing sth. 是什么意思？ doing sth succeed in和succeed on Have a good time in doing sth or with sth 对吗? the ability to do sth 和the ability in doing sth之间有什么区别？