1、We all have to go through hard knocks before we get to the good stuff, after all.
畢竟人在成功之前總是得受些打擊磨難的。

2、I have bought several units, and through hard knocks rebates not received, wrong unit sent?
我買(mǎi)了幾個(gè)單位，經(jīng)過(guò)艱苦磕磕碰碰沒(méi)有收到退稅，不對(duì)股送？

3、The more hard knocks you experienced, the faster you grow.
經(jīng)歷的痛苦越多，成長(zhǎng)的越快。

4、I have learned from the school of hard knocks the many reasons for staying.
已經(jīng)從挫折這所學(xué)校里面了解到了許多堅(jiān)守下來(lái)的理由。