Republican opponents called it an unnecessary government takeover of a private industry.

VOA: special.2010.04.15

Okay. Longer sit down meals are unnecessary because you can just go buy it all of a sudden.

好的,长时间坐着吃饭没有必要,因为你可以随买随吃

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

But which I think despite the fact that there may be points of contact between the spiritual aspects of making art and clearly religion, I think it's a rather unnecessary demand to make of a piece of art.

不过我认为，虽然,艺术创作的精神层面和宗教,很明显有一些共同之处，但并没有必要,对艺术作和宗教一样的要求。

普林斯顿公开课 - 人性课程节选

Leaving only a handful that survived. Flight Eleven and One Seventy-Five with the illegal medications that overdosed our population, led us to receive a leave of absence for an unnecessary vacation and we became addicts.

VOA: special.2009.04.17

(SAYING) Republicans regard the plan as a federal takeover of one-sixth of the U.S.economy and an unnecessary intrusion of government into personal medical decisions.

VOA: standard.2010.03.23