When traveling abroad, it is very necessary to bring some foreign currency with you.

去国外旅行时候，随身携带一些外国货币是很有必要的。

youdao

It is very necessary to make a cool and neat appearance of you whenever you go in front of that girl.

保持外表干净、帅气：不论是不是要去见心仪的女生，保持干净、帅气的外表对男生来说都是很重要的。

youdao

It is very necessary to do function word study because it is one of the most important ways of Chinese grammar.

虚词是汉语最重要的语法手段之一，加强虚词研究是很必要的。

youdao

"It is a very essential conversation, that Israel needs to conduct, among ourselves, of what is justified, what is necessary, what is legal and moral, and what even is effective in order to keep our citizens safe."

VOA: standard.2009.09.09

Something very close to this is necessary, in the IMF's view, to manage this and future crises and build a stable single currency area.

BBC: A fork in the road for the euro?

Although the revenue contribution of m-commerce is very low for now, it is necessary for Aeropostale to continue investing in it.

FORBES: Aeropostale Dials Up $15 With Teens Shopping On Smartphone Apps

The second lesson for the sport of soccer is that some form of technological enhancement to compliment the officials is necessary, but its use needs to be very judicious and limited.

FORBES: What Soccer Can Learn From the NFL Referee Lockout