在警戒范围内警戒塔可以发出自定义的文本信息。

Custom text messages can be relayed to the tower remotely to alert those in the area of a crisis.

youdao

应该设置多大范围的警戒区呢？

What should be the scope of the warning area?

youdao

他们能够在全国范围内两个半星期都能保持同样程度的警戒状态吗？

And can they maintain that level of security for two and a half weeks throughout the country?

youdao