他必须保持冷静。

He must remain calm.

youdao

例如，他在攻关的一个应用中，用户必须在多种约会情景下保持冷静。

For example, he has been working on an app in which users must keep their cool in various dating scenarios.

youdao

例如，他在攻关的一个应用中，用户必须在多种约会情景下保持冷静。

For example, he has been working on an app in which users must keep their cool in various dating scenarios.

youdao