hard knocks造句

1、We all have to go through hard knocks before we get to the good stuff, after all.
毕竟人在成功之前总是得受些打击磨难的。

2、I have bought several units, and through hard knocks rebates not received, wrong unit sent?
我买了几个单位，经过艰苦磕磕碰碰没有收到退税，不对股送？

3、The more hard knocks you experienced, the faster you grow.
经历的痛苦越多，成长的越快。

4、I have learned from the school of hard knocks the many reasons for staying.
已经从挫折这所学校里面了解到了许多坚守下来的理由。