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ne.ces.sa.ry5nes7E7ser7iadjneeded in order to achieve a particular result必需的; 必要的; 必然的He lacks the necessary skills for the job.他缺乏这项工作必要的技能。I don't have much time so I won't be staying any longer than necessary.我时间不多，所以若非必要不会呆很久。Just do what's necessary and then leave.做完必须做的事情就走吧。If necessary, we can always change the dates of our trip.必要的话，我们随时可以改变旅行日程。Is it necessary for all of us to be present at the meeting this afternoon? [+ to infinitive]我们大家都必须出席今天下午的会议吗?We don't want to take any more luggage with us than is strictly necessary.除了必不可少的行李以外，我们不想带多余的东西。Necessary can be used in negatives and questions to show that you disapprove of something and do not think it should be used or done.用在否定和疑问句中表示不赞同I really don't think that sort of language is necessary on television.我认为在电视里使用那种语言是不可取的。Was it really necessary for you to say that? [+ to infinitive]你非得那样说吗?A necessary evil is something which you do not like doing but which you know must be done.不想做但必须做的事I think he regards work as a necessary evil.我想他把工作作为包袱。
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