1. | [u][c] 果酱a thick sweet substance made by boiling fruit with sugar, often sold in jars and spread on bread |
strawberry jam 草莓酱 | |
recipes for jams and preserves 果酱和蜜饯的制作方法 | |
a jam doughnut 果酱炸面圈 |
2. | [c] 拥挤；堵塞a situation in which it is difficult or impossible to move because there are so many people or vehicles in one particular place |
The bus was delayed in a five-mile jam. 公共汽车因长达五英里的交通堵塞而延误。 | |
As fans rushed to leave, jams formed at all the exits. 因球迷都急于离开，所有出口都给阻塞了。 |
3. | [c] 卡住（因而发生故障）a situation in which a machine does not work because sth is stuck in one position |
There's a paper jam in the photocopier. 复印机卡纸了。 |
They refused to settle for a promise of jam tomorrow. 他们并不满足于那些美好未来的空话。 |
They refused to settle for a promise of jam tomorrow. 他们并不满足于那些美好未来的空话。 |
1. | [t] ~ sth + adv./prep. 使劲（往某处）挤（或压、塞）to push sth somewhere with a lot of force |
He jammed his fingers in his ears. 他用手指使劲堵住耳朵。 | |
A stool had been jammed against the door. 门被一把凳子顶住了。 |
2. | [i][t] （使）卡住，不能动弹，不能运转to become unable to move or work; to make sth do this |
The photocopier keeps jamming up. 这台复印机总是卡纸。 | |
There's a loose part that keeps jamming the mechanism. 有个零件松了经常卡住机器。 | |
The valve has jammed shut. 阀门给卡住了打不开。 | |
He jammed the door open with a piece of wood. 他用一块木头卡住门让它开着。 |
3. | [t][i] 塞入；塞进；挤进to put sb/sth into a small space where there is very little room to move |
Six of us were jammed into one small car. 我们六个人被塞进一辆小汽车里。 | |
We were jammed together like sardines in a can. 我们像罐头里的沙丁鱼一般紧紧挤在一起。 | |
The cupboards were jammed full of old newspapers. 橱柜里塞满了旧报纸。 | |
Nearly 1 000 students jammed into the hall. 近 1 000 名学生挤到礼堂里。 |
4. | [t] ~ sth (up) (with sb/sth) 挤满；塞紧to fill sth with a large number of people or things so that it is unable to function as it should |
Viewers jammed the switchboard with complaints. 打电话投诉的观众使总机应接不暇。 |
5. | [t] ~ sth （发射无线电波）干扰to send out radio signals to prevent another radio broadcast from being heard |
6. | [i][t] ~ (sth) 即兴演奏to play music with other musicians in an informal way without preparing or practising first |
The car skidded as he jammed on the brakes. 他紧急刹车时汽车向前滑了一段路。 |
The car skidded as he jammed on the brakes. 他紧急刹车时汽车向前滑了一段路。 |
