it necessary信息详情
这是必要的
necessary───n.必需品；adj.必要的；必需的；必然的；n.(Necessary)（英）内塞瑟里（人名）
in necessary───必要时
if necessary───如果必要的话；如必要的话
not necessary───不需要；不必要
necessary skills───必备技能
no necessary───没有必要
absolutely necessary───绝对必要；不可或缺；不可缺少；必不可少
necessary evil───n.无可避免之灾祸；n.不可避免的灾祸
necessary elements───必要要素
you think it necessary for dispatchers to draw maps by hand when they have electronic maps?───当调度员有电子地图时，你认为有必要用手画地图吗？
He says he would support the use of force if the UN deemed it necessary.───他说如果联合国认为有必要，他就支持动用武力。
She found it necessary to reassert her position.───她觉得有必要重申她的立场。
The doctors thought it necessary to play down the serious nature of her illness.───医生认为把她的严重病情说得轻一些是必要的。
He did not think it necessary to mention that he himself had warned the Senator not to come.───他不认为有必要提及他，他自己已经预先通知了那个参议员不要来。
Traffic cases not listed in 13. Above may also be referred to the Police if the University deems it necessary.───凡未列入上述第13.条之交通事项，大学将酌情向警方举报。
Sometimes he tells the truth, too. Besides, I don't think it necessary to tell lies about this kind of thing. Don't you think so?───有时候他也说真话，而且我认为他没有必要对这种事情撒谎，难道你不这样认为吗？
I think it necessary to ask him whether such an instruction book is now available.───我想有必要问问他，这样的一本说明书是否买得到？
The old man never entertained anyone, so he did not find it necessary to have any other furniture.───老农夫从未招待过任何人，所以他认为没有必要添购任何其它的家俱。
Falling profits made it necessary to restructure the business.
Is it necessary for all of us to be present at the meeting this afternoon?
She found it necessary to reassert her position.
The cold weather has made it necessary to protect the crops.
The Chinese Government deems it necessary to reiterate its position and policy on the following matters.
I don't think it necessary to rake up their old quarrels.
This has made it necessary for agriculture and industry to develop very quickly.
You may find it necessary to readjust the wheels from time to time.
I feel it necessary to make a correction.