Vigilance is necessary if you want to beat the odds.

如果你想打破常规，必须保持警惕。

And that means that the nucleus must be intact.

这就意味着细胞核必须保持完整。

There's a linguistics standard that has to be maintained.

存在必须要保持的语言标准。

Eventually. But for now, we have to keep a low profile.

最终会的。不过目前，我们必须保持低调。

I must keep my nerve. I must keep my nerve, he said through tight teeth.

“我必须保持镇静，必须保持镇静，”他咬紧牙关说道。

Thankfully, there is a way out of this trap, but it involves striking a subtle balance.

谢天谢地，还有办法摆脱困，但是必须保持微妙的平衡。

In the mass-media era local monopolies often had to be relatively impartial to maximise their appeal to readers and advertisers.

在大众传媒时代，地方寡头必须保持相对的公正性以吸引者和赞助商。

Well, here at the BBC we have to be creative. In fact one of our values states that 'creativity is the lifeblood of our organisation'. Lifeblood' here means 'the most important thing to make something a success'.

好吧，在BBC这里我们必须保持创造力。事实上我们的价值观之一就是" 创造力是我们机构的命脉" 。" Lifeblood" 在这里指的是使某事成功的最重要因素。

Therefore, I must be very stern and detached.

因此，我必须非常严厉，保持超然。

Constant vigilance is necessary in order to avoid accidents.

为了避免意外事故， 必须经常保持警惕。

We must remain vigilant, act fast and aggressively and look out for one another.

我们必须保持警惕，迅速采取积极行动，互相关照。

Also when the children are very young, you can give the child time outs, which means they must stand in the corner and they cannot talk, they must be quiet, they must think about what they did.

另外，当孩子很小的时候，你可以让孩子罚站，这意味着他们必须站在角落里，不能说话，他们必须保持安静，他们必须反思他们做了什么。

He can get up for about two hours each day, but you must keep the room warm.

他每天可以起来两个小时，但您必须保持房间温暖。

To qualify for the bonus, they must maintain a healthy weight.

要获得奖金，他们必须保持健康的体重。

'I must keep in good health, and not die, ' I replied.

“我必须保持健康，不要死去。”我答道。

You have to balance and look constantly at what is actually going to create a healthy contribution to the network and a healthy experience for people.

你必须保持平衡，不断地观察到底什么才能为网络做出健康的贡献，并为人们带来健康的体验。

Per the official website of the British royal family, the Queen must " remain strictly neutral with respect to political matters" .

按照英国王室官方的说法，女王必须" 保持对政治事件的绝对中立。"

We and all Americans might be weary of today's politics, but we must stay engaged.

我们和所有美国人都厌倦了当今的政治，但我们必须保持忙碌。

You must be sure not to lose your cool.

你必须保持镇定，不能失了风度。

So before they actually play, they have to be calm surrender.

在他们真正开始比赛之前，他们必须保持沉稳、冷静。