The medicine is not for internal use.

　　這種藥不可內服。

　　A combination of internal and external factors caused the company to close down.

　　內外因結合導致了公司的倒閉。

　　They resent foreign interference in the internal affairs of their country.

　　他們憎惡對他們國家內政的外來干涉。

　　He does not want to interfere in the internal affairs of another country

　　他不想干涉別國內政。

　　What is missing, however, is an internal, artistic cohesion

　　不過，缺乏的是一種內在的藝術凝聚力。

　　The UN cannot interfere in the internal affairs of any country.

　　聯(lián)合國不能干涉任何國家的內政。