it is necessary that meaning in English
是必要的
他要学世界语
Examples
- It is necessary that he should do so .
他这样做是必要的。 - It is necessary that we do this in our construction .
在建筑工程中我们需要这样做。 - To appreciate the unsteady environment existing in liquid propellant rocket chambers it is necessary that the steady state be well understood .
为了分析液体推进剂火箭发动机燃烧室中存在的非稳态环境，必须很好地了解稳态状态。 - It is necessary that he （ should ） be sent there at once
有必要立刻马上派他到那里去。 - It is necessary that he be sent there at once
有必要马上派他到那里去。