dig heels in
顽固地坚持自己的意见或立场
口语·形容固执己见或拒绝妥协
英文释义
to refuse to change one's opinion or stance; to become stubborn or resolute
例句
My son dug his heels in and refused to do his homework.
典故来源
源自人或动物将脚跟插入地面以抵抗拉力，比喻固执地坚持立场不改变。