应该警惕什么？

Vigilance against what?

youdao

紧急设计的魅力之一是有这样的认识：我们不能可靠地预测什么会变成硬骨头，但是我们应该对此保持警惕。

Part of the appeal of emergent design is the realization that we cannot reliably predict what is going to be tough, but we should keep a wary eye out for it.

youdao

应该提醒人们如果放松警惕会有什么后果。

There is no harm in reminding people about what could happen if they let their guard down.

youdao