to jam的用法和樣例：
例句
- His car was stalled in a traffic jam.
他的車(chē)子在交通阻塞中動(dòng)彈不得。 - We missed our flight owing to the traffic jam.
由于交通阻塞我們沒(méi)有趕上班機。 - Rough use will jam the typewriter keys.
粗魯地使用，將會(huì )于打字機的鍵盤(pán)卡住。 - The door was stuck so she had to yank it open.
這扇門(mén)卡住了，她必須使勁把它拉出來(lái)。
