必不可少的的英文：
essential
of the essence
- Fresh air is fundamental to good health.
新鲜的空气对于身体健康是必不可少的。 - found the book an indispensable quarry of information.
发现此书是一个必不可少的信息宝库 - The arms and legs are integral parts of the human body ; they are integral to the human body.
手臂和腿是人体的组成部分, 是构成完整的人体必不可少的。 - FINDER COOL BAG—Indispensable companion for summer travelers.
“泛得”冰包系列——您夏日旅行必不可少的好伙伴。 - Patriotism itself is a necessary link in the golden chains of our affections and virtues. ——Danton
爱国主义本身是爱和美德组成的金链上必不可少的一环。——柯勒律治 - The perfect cake is the sine qua non of the carefully planned modern wedding(J.M.Hilary)
一个完美的蛋糕在一个精心筹划的现代婚礼中是必不可少的(J.M.希拉里) - indispensable;Absolutely necessary;essential
必不可少 - Absolutely indispensable;essential.
必不可少的;根本的 - Protein is essential to life.
蛋白质是生命必不可少的。 - As for study, diligence is of the essence.
说到学习，勤奋是必不可少的。
a.
1.必要的，必不可少的
2.本质的，基本的
3.提炼的，精华的
n.
1.要素，要点
2.本质，实质
- They are essentially in a triunity.
他们本质上是三位一体的。 - Protein is essential to life.
蛋白质是生命必不可少的。 - Coal is an essentially nonrenewable resource.
煤是不可再生资源。 - There is distinction of the basic essentials and the periphery
事有本末 - Toughness is its essential feature.
韧性是其必备特征。
n. 本质，精髓；精华液
- synthetic essence
合成香精 - strawberry essence
草莓香精 - In essence, all computers are the same.
所有的电脑其实都一样。 - Its essence is a discipline of verification.
其本质上是一门查证核实的学问。 - The essence of language is communication.
语言的本质是沟通。
