jam

n.果酱

n.堵塞；拥挤；困境

v.塞满；挤；卡住；夹伤；干扰；猛压

He spread some apple jam on the bread. 他在面包上涂上苹果酱。

I reached across the table for the jam. 我伸手到桌子那端去拿果酱。

Traffic jams in the town happen everyday. 城里的交通天天堵塞。

We were delayed in a traffic jam. 我们因交通拥挤而迟到了。

They detoured around the traffic jam by heading south. 他们朝南绕过交通拥挤的人群。

How am I going to get out of this jam? 我怎样才能摆脱困境呢？

The holiday traffic is jamming the roads. 假日的车辆堵塞了交通。

You'll have to catch the next bus, we can't possibly jam any more passengers in. 你得坐下辆公共汽车, 这辆车无论如何也挤不下了。

The key turned halfway and then jammed. 钥匙转了一半就卡住了。

He got his finger jammed in the door. 他的手指被门夹伤了。

I had to jam an the brakes sharply to avoid hitting two children 我必须猛地踩刹车，以免撞上两上孩子。

jam的基本意思是“夹”“挤在中间”而四方受力,从而不能活动或脱开。常指“堵塞”“挤满”,有时也指枪、机器、零件等堵塞、移位、出现故障等而阻碍运转。

jam可用作不及物动词,也可用作及物动词,用作及物动词时,可接名词或代词作宾语。可用于被动结构。

jam的过去式、过去分词均为jammed。