necessary
adjective OPAL W
/ˈnesəsəri/
/ˈnesəseri/
Idioms - that is needed for a purpose or a reason
必需的；必要的 - necessary to do something It may be necessary to buy a new one.
也许有必要买个新的了。 - necessary for somebody to do something It doesn't seem necessary for us to meet.
我们似乎没必要见面。 - necessary for something Food is necessary for survival.
食物是生存所必需的。 - I'll make the necessary arrangements.
我会做一些必要的安排。 - Radical change was a necessary step for reform.
彻底的变革是改革的必要步骤。 - if necessary If necessary, you can contact me at home.
必要的话，我在家时你也可以和我联系。 - when necessary Only use your car when absolutely necessary.
非用不可的时候才用你的汽车。 - where necessary Changes can easily be made where necessary.
必要时可以很容易地进行更改。 - He has the expertise necessary to make it work.
他有必要的专业知识使其发挥作用。 - I was determined not to stay in hospital for any longer than was strictly necessary.
我决定， 除非极为必要， 否则决不在医院多呆一天。
- She has the qualities necessary to be a successful teacher.
她具备成为一名成功教师所必需的素质。 - The owner failed to take the steps necessary to ensure the residents' safety.
业主未能采取必要措施确保居民的安全。 - Make any alterations you consider necessary.
你认为有必要的都可以修改。 - The cold weather has made it necessary to protect the crops.
天气寒冷，庄稼必须加以保护。 - These measures will be enforced, if necessary, by the army.
如果必要，军队会强制执行这些措施。 - We are here to give help and support when necessary.
如有需要，我们随时提供帮助和支援。 - You may find it necessary to readjust the wheels from time to time.
你可能会发现不时调整轮子很有必要。 - qualifications which are necessary for work with the under-fives
照顾 5 岁以下儿童必需的资格
Collocations Dictionaryverbs- appear
- be
- prove
- …
- really
- strictly
- absolutely
- …
- for
- if necessary
- as necessary
- when necessary
- …
- necessary to do something It may be necessary to buy a new one.
- [only before noun] that must exist or happen and cannot be avoided
必然的；无法避免的 - This is a necessary consequence of progress.
这是事情发展的必然后果。 - A necessary condition for a steep fall in demand is a widespread collapse in confidence.
要使需求陡降，一个必要条件是人们普遍丧失信心。
- This is a necessary consequence of progress.
词源late Middle English: from Latin necessarius, from necesse ‘be needful’.
Idioms
a necessary evil
- a thing that is bad or that you do not like but that you must accept for a particular reason
无法避免的坏事；不得已的事 - The loss of jobs is regarded as a necessary evil in the fight against inflation.
失业被认为是与通货膨胀斗争中的一个必然的祸害。
- The loss of jobs is regarded as a necessary evil in the fight against inflation.