It's necessary that no one go outside during the zombi attack.

僵尸袭击期间，大家务必不能外出。

It is necessary that we devise a new system to improve our productivity.

我们有必要设计一个新制度以提升我们的生产力。

So you feel it's necessary that you don't waste your money by throwing it away.

所以你认为不能把它扔掉浪费钱。

It is the light of course but it is necessary that the place be clean and pleasant.

“亮固然要很亮，但也必须是个干净愉快的地方。”

Considering the current grim situation, it is necessary that the authorities concerned should take immediate measures to eliminate these disadvantages.

鉴于目前形势严峻，有关部门有必要立刻采取措施来消除这些弊端。

It was necessary that the cows be milked.

有必要给奶牛挤奶。

So it's necessary that we can take decisions ourselves.

因此，我们有必要自己做出决定。

It is necessary that I should ruin and humiliate myself.

我必须毁灭和羞辱自己。

Petra doesn't think it's necessary that they go and get the money right away.

Petra 认为他们没有必要立即去拿钱。

It is not enough to simply memorize our laws, it is necessary that we comprehend why and how they were formed.

仅仅记住法律条款是不够的。我们必须理解它是为什么且如何形成的。

So for the neighbors and for many people, it is necessary that the situation in Venezuela will be resolved very soon.

对委内瑞拉邻国和多数人来说，尽快解决委内瑞拉局势势在必行。

It was necessary that she should know what Swithin contemplated saying, that her statements might precisely harmonize.

她必须知道 Swithin 打算说什么， 这样她的陈述才能准确地协调一致。

However, Madison felt that it was necessary that the United States stop Great Britain from capturing American ships.

然而，麦迪逊认为美国有必要阻止英国捕获美国船只。

He was going to be a clergyman, and it was necessary that he should be preserved from contamination.

他将成为一名牧师， 因此有必要保护他免受污染。

It is necessary that my messenger should be educated, should be intelligent, should be silent as the grave.

我的使者有必要受过教育， 应该聪明，应该像坟墓一样沉默。

It is necessary that I attend to my moustaches — they are deplorably limp from the heat of travelling.

我有必要注意我的胡须——由于旅行的高温， 它们软得可怜。

In order to give this security, however, it is necessary that the insurers should have a very large capital.

然而，为了提供这种保障，保险公司必须拥有非常大的资本。

And if we wanted to go higher, faster, sooner, harder, it was necessary that we create our very own spaceships.

如果我们想飞得更高、更快、更快、更努力，就必须制造我们自己的宇宙飞船。

It is necessary that other nations learn from China's success in curbing its population surge over the past three decades.

其他国家有必要向中国学习过去三十年在遏制人口激增方面取得的成功。

For a fortnight it was necessary that someone should stay with him all night, and she took turns at watching with her husband.

有两个星期思特里克兰德整夜都需要有人看护，她就和她丈夫轮班守夜。