pick at

US /pɪk æt/
UK /pɪk æt/
"pick at" picture
1.

挑剔地吃, 小口吃

eat food slowly and without much enthusiasm

:
She was so upset that she could only pick at her dinner.
她心烦意乱,只能挑剔地吃晚餐。
He's been picking at his food all evening.
他一晚上都在挑剔地吃东西。
2.

挑剔, 吹毛求疵

criticize someone or something repeatedly, especially in a petty or annoying way

:
She's always picking at his grammar.
她总是挑剔他的语法。
Don't pick at every little mistake I make.
不要挑剔我犯的每一个小错误。