jam on

• • 猛然戴上，猛然穿上：

    Jim jammed on his hat and ran out of the house.

    吉姆猛地戴上帽子，跑出了屋子。

  • 猛踩(刹车等)：

    The driver jammed on the brakes when he saw a little girl running in front of his car.

    当司机看见一个小姑娘跑到他的车前时他来了个紧急刹车。