adj.被卡住的；塞滿的

動詞jam的過去式和過去分詞.

He jammed his key into the lock. 他把鑰匙卡在鎖里了。

The newspapers were so tightly jammed in the letter-box he could hardly get them out. 報紙緊緊塞在信箱里，他很難取出來。

The landing-gear has jammed. 著陸裝置發(fā)生故障。

As soon as she saw the child in the road, she jammed on her brakes. 她一見路上有個小孩，便猛踩剎車。

The spout of the teapot is jammed by tea. 茶壺的壺口被茶葉堵住了。