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IELTS BNC: 5571 COCA: 5470
jam
dʒæm dʒæm
Word forms: plural , 3rd person singular present tense jams, present participle jamming, past tense , past participle jammed
1 N-MASS 果酱 Jam is a thick sweet food that is made by cooking fruit with a large amount of sugar, and that is usually spread on bread. 果酱 [mainly British]

  • ...home-made jam.

    自制果酱

in AM, usually use 美国英语通常用 jelly
2 VERB 硬推；硬塞；使劲放 If you jam something somewhere, you push or put it there roughly. 硬推；硬塞；使劲放

  • He picked his cap up off the ground and jammed it on his head. [VERB noun prep.]

    他从地上捡起帽子，猛地扣到头上。

  • Pete jammed his hands into his pockets. [VERB noun prep.]

    皮特使劲把手插进口袋里。

SYN pack, force, press, stuff
3 V-ERG （机器）卡住；使卡住；（使）不能运转 If something such as a part of a machine jams, or if something jams it, the part becomes fixed in position and is unable to move freely or work properly. （机器）卡住；使卡住；（使）不能运转 [Also V n adj]

  • The second time he fired his gun jammed. [VERB]

    他开第二枪时枪卡壳了。

  • A rope jammed the boat's propeller. [VERB noun]

    一根绳子卡住了船的螺旋桨。

  • Cracks appeared in the wall and a door jammed shut. [VERB adj.ive]

    墙上出现了裂缝，一扇门卡住打不开了。

  • The intake valve was jammed open. [be VERB-ed]

    进气阀卡住了，关不上。

  • Every few minutes the motor cut out as the machinery became jammed. [VERB-ed]

    机器老是卡住，马达隔不了几分钟就突然熄火。

4 VERB （车辆）堵住，堵塞（道路） If vehicles jam a road, there are so many of them that they cannot move. （车辆）堵住，堵塞（道路）

  • Hundreds of departing motorists jammed the roads. [VERB noun]

    数百名打算驾车离开的司机堵住了道路。

Jam
is also a noun.

  • Trucks sat in a jam for ten hours waiting to cross the bridge.

    等待过桥的卡车堵了10个小时。

jammed

  • Nearby roads and the dirt track to the beach were jammed with cars.

    附近通往海滩的公路和土路全都堵满了汽车。

5 VERB （人）塞进，挤进 If a lot of people jam a place, or jam into a place, they are pressed tightly together so that they can hardly move. （人）塞进，挤进

  • Hundreds of people jammed the boardwalk to watch. [VERB noun]

    数百人挤在木板人行道上观看。

  • They jammed into buses provided by the Red Cross and headed for safety. [VERB + into]

    他们挤上红十字会派来的巴士前往安全的地方。

jammed

  • The stadium was jammed and they had to turn away hundreds of disappointed fans.

    体育场里观众爆满，他们不得不将几百名失望的球迷拒之门外。

6 VERB 干扰（无线电或电子信号） To jam a radio or electronic signal means to interfere with it and prevent it from being received or heard clearly. 干扰（无线电或电子信号）

  • They will try to jam the transmissions electronically. [VERB noun]

    他们会试图用电子信号对发射进行干扰。

Jamming

  • The plane is used for electronic Jamming and radar detection.

    这架飞机用于进行电子干扰和雷达探测。

7 VERB 使（电话总机）应接不暇；使（电话线）过于繁忙 If callers are jamming telephone lines, there are so many callers that the people answering the telephones find it difficult to deal with them all. 使（电话总机）应接不暇；使（电话线）过于繁忙

  • Hundreds of callers jammed the BBC switchboard for more than an hour. [VERB noun]

    在一个多小时内，成百上千的来电使得英国广播公司的总机应接不暇。

  • The telephone exchange has been jammed all day with people wanting to buy season tickets. [VERB-ed]

    很多人想买季票，电话总机一天到晚忙个不停。

8 N-SING [in NOUN] 陷入困境 If someone is in a jam, they are in a very difficult situation. 陷入困境 [informal]

  • They were in a real jam, Bob thought glumly.

    他们确实遇上麻烦了，鲍勃闷闷不乐地想。

9 VERB （爵士乐手或摇滚乐手）即兴演奏 When jazz or rock musicians are jamming, they are informally playing music that has not been written down or planned in advance. （爵士乐手或摇滚乐手）即兴演奏 [informal]

  • He was Jamming with his saxophone. [VERB]

    他在即兴吹奏萨克斯管。

Jam
is also a noun.

  • ...a free-form jazz jam.

    随性的爵士乐即兴演出

  • ...a jam session.

    即兴演奏环节

10 See also: traffic jam 
Quotations
The rule is, jam tomorrow and jam yesterday - but never jam today Lewis Carroll Alice Through the Looking Glass
Word Partnership
Word PartnershipUse jam with:
N.

jam jar, strawberry jam 1

traffic jam 4

Trends of jam
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Jam
1 →see: jam;

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