必须的英文怎么说 必须英文例句

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必须的的英文：
integrant
necessary
obligatory
pre-requisite
prerequisite

参考例句：
If I want to get married, I have to go through a lot of red tape.
"如果我想结婚,必须经过许多繁文褥节。"Identifier expected
必须是标识符Be expected to ; be presumed to
被期望;必须Must confirm.
必须确认。The explosive(charges)must be kept away from fire
爆炸物必须远离火烛。You must guard your tongue carefully.
你必须言语谨慎。Scientific theories must be based on facts.
科学理论必须以事实为根据。Do I have to make a reservation?
我必须预约吗?You must accustom yourself to it.
你必须随遇而安。a returnable writ.
必须送还的令状传票

integrant是什么意思：
a. 构成整体的,部分的,必须的
n. 要素
vertical integration.
包括从生产到销售各个阶段的纵向联合。an integral equation
积分方程integrate a restaurant
取消饭馆用餐的种族隔离

necessary是什么意思：
adj. 必要的；必需的；必然的；不可避免的
n. 必需品
It is necessary to delimit the anomaly clearly.
清楚地圈定异常是必要的。The redress of mistakes is necessary.
纠错是必要的。It"s necessary to operate on him.
必须给他做手术。

obligatory是什么意思：
adj. 必须履行的，强制性的；习惯性的，礼节性的
Attendance is obligatory.
出席是必须的。Mathematics is an obligatory course.
数学是一门必修课。It is obligatory for everyone to safeguard our motherland.
保卫祖国人人有责。