n.外延過寬，過度伸展

Any users of credit may overextend themselves. 每個貸款使用者都有可能作出不自量力的事。

Don't overextend your stay in Europe. 不要在歐洲逗留得太久。

Don't overextend yourself in the process. 不要一個人承擔(dān)太多的任務(wù)。

We would be back to our historical cycle of exuberant overextension and sulking isolationism. 我們就會回到歷史上洋洋自得的過份開發(fā)和陰郁沉悶的孤立主義時期，從而周而復(fù)始下去。

Although it does look promising, be careful not to overextend yourself or you will lose in the long run. 雖然看上去很有希望，但是不要過分?jǐn)U展自己，否則最終可能獲得失敗。