adv.偷偷地，秘密地

He looked at her furtively from the corner of his eye.
他从眼角偷偷地打量着她。
The cat furtively crept towards the bird, hoping for a meal.
那只猫偷偷摸摸地向小鸟靠近，希望捕一顿美餐。
She furtively checked her phone during the meeting, hoping not to be noticed.
她在会议中偷偷查看手机，希望不被发现。
The child furtively ate the last piece of cake when no one was looking.
当没人注意时，小孩偷偷地吃掉了最后一块蛋糕。
He entered the room furtively, trying to avoid detection.
他鬼鬼祟祟地进入房间，试图不被人察觉。
She furtively glanced at her reflection in the window, adjusting her hair.
她偷偷地在窗户上瞥了一眼自己的倒影，整理了一下头发。
The spy moved furtively through the dark alleys, avoiding the streetlights.
间谍在黑暗的小巷里偷偷移动，避开路灯。
He furtively slipped the note into her locker, hoping she'd find it.
他偷偷地把纸条塞进她的储物柜，希望她能发现。
She listened furtively to their conversation, trying to understand their plans.
她偷听他们的对话，试图了解他们的计划。
The thief furtively looked around before grabbing the valuable and running away.
小偷在抓起贵重物品逃跑前，先偷偷环顾四周。