警覺的用法和樣例：
例句
-
飛行員必須警覺天氣的變化。
A pilot must be awake to the changes in the weather. -
我對他說他父親與我女兒有暖昧關係——這使他警覺了起來。
I told him about his father's affair with my daughter- that makes him sit up. -
我罵她惺惺作態，她馬上警覺起來。
I called her a damned hypocrite and that made her sit up. -
每個人必須隨時提高警覺。
One must be ever vigilant. -
警覺的豹子靜悄悄地走近一隻鹿。
The alert leopard went up to a deer quietly.
