“你在生活中做的所有事都必须是安全的，我今天所做的也是如此。”他说道。

"You've got to do everything safe in life, and that's what I did today," he said.

youdao

现在，第三个也是更重要的动机出现了：为了防止我们文明的崩溃，这些目标可能是必须要实现的。

Now a third and far more significant motivation presents itself: meeting these goals may be necessary to prevent the collapse of our civilization.

youdao

这是必须付出的代价，也是值得付出的代价。

This is a price we must pay and a price is worth paying.

youdao

Doesn't respond as well to killed vaccines, and that's why the Salk vaccine has to be injected at a high dose.

但却对灭活的疫苗没有那样强烈反应,这也是索尔克氏疫苗为何,必须大剂量注射的原因

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but it is imperative that you do not forget things as simple as brushing your teeth.

但不要忘记像刷牙这样的小事也是必须的。

Make sure 实战 - SpeakingMax英语口语达人

What this entails is just trying to stop controlling things, but I also mistake it a little bit because by stopping controlling things, you're going to control it more.

必须的是,试着放手不去控制事物，但这也是个悖论,因为想不控制事物，反而会加强控制。

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