vt. fus.1.(nibble at without interest)to pick at sth
+ food挑挑拣拣地吃；没有食欲地吃
Sarah picked at a plate of cheese for supper, but wasn't really hungry.萨拉晚餐时吃了一盘奶酪, 但她并没有真觉得饿。
to pick at your food挑挑拣拣地吃东西；毫无食欲地吃东西
She picked at her food with obvious lack of interest.她挑挑拣拣地吃着东西, 很明显没有兴趣。
2.(criticize)to pick at sb/sth批评…；找…的碴
You're always picking at her.你总是在找她的碴。
3.(keep pulling)to pick at sth
+ clothing, spot不停拉扯；不停抓弄
She examined her bright pink nails, picking at her cuticles.她仔细地查看了自己亮粉色的指甲, 不停地扯着死皮。
Ann continued to pick at the wallpaper, peeling it gently away.安继续扯着墙纸, 轻轻地将它剥下来。