有必要的英文：
to be necessary

参考例句：
  • Definitely more independent corroboration is necessary.
    有必要更明确地进一步证实。
  • There is a need for a curb on downloading papers.
    有必要抑制下载论文的势头。
  • The change in his illness indicates the use of stronger drugs.
    他疾病的变化有必要使用猛一些的药。
  • Always proofread completed letters very carefully.Consult dictionary when necessary or in doubt.
    完成的书信一定要很小心地校对，有必要或怀疑时查典。
  • Environmental groups say action is needed to find clean, renewable energy sources.
    环境组织表示有必要采取措施寻找干净的、可恢复的能源。
  • There are calls for the case to be retried.
    该案有必要重审.
  • It's necessary to rebuild our alma mater.
    有必要重建我们的母校。
  • In this case surgery is indicated.
    这种病例有必要动手术。
  • The most northerly races have to be transferred southwards
    最北的种族有必要南移。
  • Do you have to slam the door?
    你有必要摔门吗?
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。
  • Cases it deems necessary to try.
    认为应当由本院审理的案件。
  • It is necessary to delimitate the anomaly clearly.
    清楚地圈定异常是必要的。

到沪江小D查看有必要的英文翻译>>

翻译推荐：