switched on的用法和樣例：
例句
用作形容詞 (adj.)
- People are vigilant on issues that interest them.
人們在其感興趣的事情上是警惕的。 - A due watchfulness on the movements of the enemy was maintained.
他們對敵人的行動還是相當警惕的。 - He sat down on the nearest available seat.
他在最近的空座位上坐下來。 - John has put me on to the latest gossip.
約翰已讓我知道最近的閑言碎語。
