n. a dull stupid fatuous person
n. an abrupt spasmodic movement
n. (mechanics) the rate of change of acceleration
n. raising a weight from shoulder height to above the head by straightening the arms
n. 性情古怪的人, 急拉, 肌肉抽搐, 牛肉干
vi. 痉挛, 急拉, 急推
vt. 猛拉
1. He is such a jerk for not helping his friend.
他真是个混蛋，居然不帮助他的朋友。
2. Don't be a jerk; treat others with respect.
别做混蛋；要尊重他人。
3. I can't believe he said that; what a jerk!
我真不敢相信他说了那样的话；真是个混蛋！