自2010年至今的四级考试中， 共出现过 次
自2010年至今的六级考试中， 共出现过 次
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.
VERB 硬推；硬塞；使劲放 If you jam something somewhere, you push or put it there roughly.
He picked his cap up off the ground and jammed it on his head...
Pete jammed his hands into his pockets.
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.
The second time he fired his gun jammed...
A rope jammed the boat's propeller...
VERB （车辆）堵住，堵塞（道路） If vehicles jam a road, there are so many of them that they cannot move.
Hundreds of departing motorists jammed the roads.
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.
Hundreds of people jammed the boardwalk to watch...
They jammed into buses provided by the Red Cross and headed for safety.
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.
They will try to jam the transmissions electronically.
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.
Hundreds of callers jammed the BBC switchboard for more than an hour...
The telephone exchange has been jammed all day with people wanting to buy season tickets.
N-SING 陷入困境 If someone is in a jam, they are in a very difficult situation.
They were in a real jam, Bob thought glumly.
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.
He was jamming with his saxophone.