雙語例句：

　　Hospital admission is not necessary in most cases.

　　大多數情況下，病人無須住院。

　　The report concluded that no substantive changes were necessary.

　　報告的結論是，無須作任何重大變更。

　　It might be necessary to make a few slight modifications to the design.

　　也許有必要對這個設計稍作幾處修改。

　　We are willing to make any concessions necessary to this end.

　　為達到此目的我們愿作出任何必要的讓步。

　　We are still looking for someone who combines all the necessary qualities.

　　我們仍在尋覓兼備所有必要才能的人選。