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IELTS BNC: 5571 COCA: 5470
jam
★
noun /dʒæm/
singularjam
pluraljams
  1. 1
    [C/U] a sweet sticky food made from boiled fruit and sugar that is usually spread onto bread （通常涂在面包上的）果酱

    strawberry jam 草莓酱

    a jar of jam 一罐果酱

    a jam tart 果酱馅饼

     Synonyms and related words
    Food spread on bread: butter, caviar, jam...
  2. 2
    [C] [usually singular] a difficult situation 困境
     Synonyms and related words
    Difficult situations and experiences: crisis, battle, nightmare...
  3. 3
    [C] a long line of vehicles that are not moving, or are moving very slowly 堵塞的车流；交通堵塞
     Synonyms and related words
    Traffic movements and traffic jams: back up, bottleneck, bumper-to-bumper...
  4. 4
    [C] an occasion when a machine does not work because something prevents its parts from moving （机器的）发生故障，卡住

    a paper jam in the printer 打印机卡纸

     Synonyms and related words
    Problems with machines: bit rot, breakdown, bug...
  5. 5
    [C] informal a jam session 音乐即兴演奏会
     Synonyms and related words
    Musical performances: concert, gig, jam...
  6. From our crowdsourced Open Dictionary
    6
    not someone's jam not something that you enjoy or are interested in 不是某人的爱好；非某人的兴趣所在

    You know what's not my jam? People doing nothing.

    Submitted from United Kingdom on 26/04/2017
     

phrases

jam
★
verb /dʒæm/
present tense
I/you/we/theyjam
he/she/itjams
present participlejamming
past tensejammed
past participlejammed
  1. 1
    [T] to push someone or something somewhere using a lot of force 用力推挤；硬塞
    jam someone/something into/on/against something :

    Marilyn jammed the hat firmly on her head and went out. 玛里琳把帽子牢牢套在头上然后出去了。

    Mick jammed a copy of the report into my hand. 米克把报告的一份副本塞到我手里。

    Kirsten was trying to jam all the papers into her bag. 柯尔斯滕想把所有文件都塞进她的包里。

     Synonyms and related words
    To move, or to try to move something by pushing: push, shove, heave...
  2. 2
    [T] [often passive] if people or things jam a place, there are so many of them that it is difficult to move 塞紧；挤满；堵塞

    Thousands jammed the area to see the Pope. 几千人挤在那块地方想看一眼教皇。

    jam someone/something into something :

    Four men were jammed into the back of the car. 4个男人挤在车的后排座位上。

    jam something with something :

    The streets were jammed with cars. 街上挤满了汽车。

     Synonyms and related words
    To fill a thing or place: fill, cram, stuff...
  3. 3

    jam

    or

    jam up

    [I] if a machine, lock, window etc jams, it does not work because something stops it from moving 卡住；发生故障

    He fired one shot before his gun jammed. 他只开了一枪，枪就卡住了。

     Synonyms and related words
    To stop working (of a piece of equipment): break down, go off, shut off...
     Synonyms and related words
    Engine and machine behaviour: backfire, burn up, come to life...
    1. a.
      [T] to block something so that it stops working or moving 堵住

      A small stone had jammed the pump. 一个小石块堵住了水泵。

       Synonyms and related words
      To make a machine or piece of machinery stop working: break, brick, cannibalise...
  4. 4
    [T] to injure part of your body because it gets pressed or squeezed between two hard things 挤伤；压伤

    The window suddenly dropped down and jammed her finger. 窗户突然落下来，砸伤了她的手指。

     Synonyms and related words
    To injure yourself or someone else: injure, harm, wound...
  5. 5
    [I/T] if a telephone system jams or is jammed, it stops working because too many people are making calls at the same time （电话系统因很多人同时打电话而）瘫痪

    Only a few minutes after the programme, the switchboard was jammed with complaints. 该节目播出仅仅几分钟，总机就因接到很多投诉电话而瘫痪。

     Synonyms and related words
    Using a telephone: answer, busy, call...
  6. 6
    [T] to block a radio, television, or other electronic signal by broadcasting another signal on the same wavelength 干扰（电台、电视台等的电子信号）
     Synonyms and related words
    Radio, radar and sonar signals: atmospherics, directional, footprint...
  7. 7
    [I] music informal to play music in an informal way with a group of people （与一群人）即兴演奏
     Synonyms and related words
    Playing, performing and arranging music: accompany, arrange, articulation...

phrasal verbs

JAM
noun
  1. From our crowdsourced Open Dictionary
    just about managing (families): an unofficial UK government acronym for people who are in work and getting by, but only just

    Politicians have known about the Jams and vied for their allegiance for years.

    Submitted from United Kingdom on 21/11/2016
     

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