1 necessary /ˈnɛsəˌseri/ Brit /ˈnɛsəsri/ adjective /ˈnɛsəˌseri/ Brit /ˈnɛsəsri/
adjective
Learner's definition of NECESSARY
1
[more necessary; most necessary] : so important that you must do it or have it : absolutely needed必要的;必需的 -
Is it really/absolutely necessary for me to have surgery?我非做手术不可吗?
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The threat of a thunderstorm made it necessary to cancel the picnic.因为可能发生雷暴,必须取消这次野餐。
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It's not necessary to wear a tie.没必要戴领带。
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Food is necessary for life.食物是生活必需品。
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We had all the necessary ingredients.我们已经备好所有必需的原料。
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Apply another coat of paint if necessary. [=if it is needed]如有必要就再涂一层漆。
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Take as much time as necessary. [=as much time as you need]需要多少时间就花多少时间。
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She took the medicine only when absolutely necessary.只有万不得已时她才服药。
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a medically necessary procedure医学上必要的步骤
2
always used before a noun,
formal : unable to be changed or avoided无法改变的;不可避免的 -
Higher prices are a necessary consequence of the company's new services.更高的价格是公司新增服务的必然结果。
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There is no necessary connection between what is legal and what is moral. [=what is legal does not always have to be moral and what is moral does not always have to be legal]法律与道德之间没有必然的联系。
necessary evil
— see 2evil 2 necessary /ˈnɛsəˌseri/ Brit /ˈnɛsəsri/ noun
plural necessaries
2 necessary
/ˈnɛsəˌseri/ Brit /ˈnɛsəsri/
noun
plural necessaries
Learner's definition of NECESSARY
1
necessaries [plural] : things (such as food, a place to live, and clothing) that you must have : necessary things生活必需品(如衣、食、住等) 2
the necessary British, informal : whatever is needed for some purpose必需品;必要的事