Patrolling
vt.& vi. 巡逻, 巡查（patrol的现在分词形式）
🗣️ 情景例句
I'm on the top floor.
我在顶层。
From across the room, David cast a glance at his brother.
隔着房间，大卫瞥了一下弟弟。
He wasn't dreaming, officer.I was telling him to drive slowly.
警官，他思想没有开小差。我刚才正告诉他开慢点。