pick on
US /pɪk ɑːn/
UK /pɪk ɑːn/

1.
bắt nạt, chỉ trích
repeatedly single out (someone) for criticism or unkind treatment in a way perceived to be unfair or unjust
:
•
Why do you always pick on your little brother?
Tại sao bạn luôn bắt nạt em trai mình?
•
The older kids used to pick on him because he was small.
Những đứa trẻ lớn hơn thường bắt nạt anh ấy vì anh ấy nhỏ con.