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单词 necessary
释义

necessary ​‌‌‌

​adjective
UK /ˈnesəs(ə)ri/
Other entries for this word
necessary noun
a necessary evil phrase
wherever possible/necessary phrase
as...as usual/possible/necessary/expected phrase
DEFINITIONS2
  1. 1
    essential or needed in order to do something, provide something, or make something happen

    I don’t want to be disturbed unless it’s absolutely necessary.

    necessary for:

    basic foods regarded as necessary for health

    necessary for:

    What type of clothing is necessary for survival at these altitudes?

    it is necessary for someone to do something:

    It was necessary for all students to register a week in advance.

    if necessary:

    I can take your place at the meeting tomorrow if necessary.

    as necessary:

    We’ll be adding more workers as necessary (=as they are needed).

    Synonyms and related words
    Necessary
    necessary
    essential
    vital
  2. 2
    certain to happen or exist

    The necessary risks of medicines must be weighed against their benefits.

    Synonyms and related words
    Certain or likely to happen
    certain
    likely
    probable
phrases
a necessary evil

necessary ​‌‌‌

​adjective
US /ˈnesəˌseri/
Other entries for this word
necessary noun
a necessary evil phrase
wherever possible/necessary phrase
as...as usual/possible/necessary/expected phrase
DEFINITIONS2
  1. 1
    essential or needed in order to do something, provide something, or make something happen

    I don’t want to be disturbed unless it’s absolutely necessary.

    necessary for:

    basic foods regarded as necessary for health

    necessary for:

    What type of clothing is necessary for survival at these altitudes?

    it is necessary for someone to do something:

    It was necessary for all students to register a week in advance.

    if necessary:

    I can take your place at the meeting tomorrow if necessary.

    as necessary:

    We’ll be adding more workers as necessary (=as they are needed).

    Synonyms and related words
    Necessary
    necessary
    essential
    vital
  2. 2
    certain to happen or exist

    The necessary risks of medicines must be weighed against their benefits.

    Synonyms and related words
    Certain or likely to happen
    certain
    likely
    probable
phrases
a necessary evil

necessary

​noun countable ​usually plural
UK /ˈnesəs(ə)ri/
Other entries for this word
necessary adjective
a necessary evil phrase
wherever possible/necessary phrase
as...as usual/possible/necessary/expected phrase
Word Forms
singularnecessary
pluralnecessaries
DEFINITIONS1
  1. 1
    something that is essential

    I’ve packed all the necessaries for our outing tomorrow.

    Synonyms and related words
    Important thing or detail
    feature
    priority
    element

necessary

​noun countable ​usually plural​formal
US /ˈnesəˌseri/
Other entries for this word
necessary adjective
a necessary evil phrase
wherever possible/necessary phrase
as...as usual/possible/necessary/expected phrase
Word Forms
singularnecessary
pluralnecessaries
DEFINITIONS1
  1. 1
    something that is essential

    the necessaries of life

    Synonyms and related words
    Important thing or detail
    feature
    priority
    element
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更新时间：2025/11/4 16:44:30