It is necessary to exercise caution when making commendations.

做推荐有必谨慎一些。

Defensibility is a necessary character of excellent dwelling environment.

可防卫性是居住区环境质量必组成方面。

They were plotting how to obtain the necessary information.

他们正在策划如何获取必情报。

Don't labour the reader with unnecessary detail.

用必细节使读者疲倦。

You may find it necessary to readjust the wheels from time to time.

你会发现整轮子很有必。

You must understand the necessity of education.

你必须懂得教育必性。

The necessity for nuclear nonproliferation seems clear.

防止核扩散必性似乎清清楚楚。

At a pinch it can be used as a weapon.

必可把它作武器。

The company needs to pep up its image.

这家公司有必改善其形象。

We were obligated to attend the opening ceremony.

我们有必参加开幕式。

It is necessary that one should obey the law.

一个人遵守法律是必。

Thousands of children in the world today suffer needlessly.

今世界有成千上万儿童遭受着必痛苦。

There is no need to think that you are sentenced to a lifetime of unhappiness.

没必认为你就注定一辈子得到幸福。

His films are full of gratuitous violence.

他拍影片充满了必暴力。

We shall have to trim away the unnecessary parts of the spending.

我们必须削减必开支。

Should make the patient maintains lukewarm thaw quiet, can give when necessary tranquillizer and aconite.

应使病人保持温暖和安静，必可给镇静剂和止痛剂。

Some parents worry unnecessarily about their children.

有些父母必地为孩子担心。

There’s no sense in taking unnecessary risks.

做必冒险毫无意义。

There is no cause for concern, for the windstorm was not too serious.

那场风暴太厉害,没必担心。

Complexity of aluminium electrolyser production is analyzed, and motivation of production intelligence is explained.

摘分析了铝电解槽生产复杂性，提出生产智能理念必性。