That is neither possible nor necessary.

这不可能，也不必要。

youdao

Let there be no doubt: brilliance and quick-thinking are valuable in other pursuits. But, they're neither sufficient nor necessary in science.

毫无疑问：光鲜与灵活的性格在其他事业上很有用，但在学术研究上，它们既不足够，也不必要。

youdao

The existence of the discretion of judges is an indisputable fact that the discretion of judges in the judicial activity completely eliminated neither possible nor necessary.

法官自由裁量权的存在是不争的事实，将法官自由裁量权在司法活动中完全消除既不可能，也无必要。

youdao

For example, it is neither right nor necessary to claim that the integrity of the single market, or full membership of the European Union requires the working hours of British hospital doctors to be set in Brussels irrespective of the views of British parliamentarians and practitioners.

BBC: David Cameron speech: UK and the EU

So now we move on from Greek default, that inevitability, to the possible default of Portugal and Ireland (neither too damaging nor entirely necessary) to the possibilities of contagion through to Spain and Italy (neither necessary, both horrible to contemplate) and the really big question: will any and all of these countries stay in the euro?

FORBES: Finally, Greek Default is the Received Wisdom

Existing solutions have proven neither necessary nor sufficient in meeting security and privacy requirements.

FORBES: Written by David Lowenstein and Risu Na