pick at
phrasal verbpick at something
- to eat food slowly, taking small amounts or bites because you are not hungry
磨蹭着吃；（因为不饿而）小口吃 - She sat at the table in silence, picking at her dinner.
她静静地坐在桌边，吃着晚饭。
- She sat at the table in silence, picking at her dinner.
- to pull or touch something several times
（反复地）揪，扯 - He tried to undo the knot by picking at it with his fingers.
他用手指不停地扯，想把绳结解开。
- He tried to undo the knot by picking at it with his fingers.