necessary for

基本解釋

I don't think it's necessary for us to huckster the date.
我認為我們沒必要在日期問題上沒完沒了的爭論。
chazidian.com
It has at least one gene necessary for photosynthesis—so far it’s the only animal known with this ability.
它有至少一個基因是光合作用所必需的——到目前為止這是唯一被發(fā)現(xiàn)具有此項能力的動物。
Take care of your car, because you drive the car and you need it every day. The car is necessary for you.
所以好好照顧自己的車，因為車子是你在開，你每天都需要用到車，它是你的必需品。

He said this is necessary for the country to compete among some of the world's fastest growing economies.
The kind of discipline and self-restraint necessary for an educated mind appears, for him, to be unequally divided among human beings.
那種受過教育者,所必備的紀律與自制，對他而言似乎是不平等地,區(qū)隔了人群。
耶魯公開課 - 政治哲學(xué)導(dǎo)論課程節(jié)選
Each of these waves is regarded as in some way necessary for the proper construction of a just city.
每一波,在某些程度上,都被視為是真正建立正義之城的必需條件。
耶魯公開課 - 政治哲學(xué)導(dǎo)論課程節(jié)選

And the gangsters, in turn, are often necessary for the men at the top.
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