Yet the operation is a matter of choice and not necessity.

其实这个手术只是一种选择，还没到非做不可的地步。

youdao

The day will come when the politicians will do the right thing for our people out of political necessity and not out of charity or idealism."

VOA: special.2009.09.06

If they acted with a kind of mechanical necessity or even geometric necessity, they could not possibly be moral laws in that way.

如果这些法则有机械上,或者几何上的必须性的话，它们就不能被称作道德法则。

耶鲁公开课 - 政治哲学导论课程节选

That will,by necessity, need more troops, not only for the training, but for the mentoring in the field.

VOA: standard.2009.09.29

Contrary to Mr Bush's assertions, the war was one of choice, not necessity.

ECONOMIST: There are plenty of them, alas

She said they were not a necessity and should not be used for cosmetic purposes.

BBC: Health Committee

If the determination is made that records do not support necessity, then the entire hospital stay will be denied.

FORBES: CMS Tightening the Screws on Unnecessary Procedures in Florida and 10 Other States