A2 [ C or U ] a sweet, soft food made by cooking fruit with sugar to preserve it. It is eaten on bread.果酱

B2 [ C ] → traffic jam 交通堵塞（同 traffic jam）

C1 [ C ] something that is stuck in a machine, or that prevents the parts of a machine from moving堵在机器中的东西；让机器部件无法运动的东西

[ S ] informal a difficult situation困境，窘境

[ S ] a situation in which a lot of people are in a small space拥挤；堵塞

C1 [ I or T ] to be, or make something, unable to move（使）轧住；（使）卡住

[ T ] to stop radio signals from reaching the people who want to receive them干扰（无线电信号）

[ I ] to play jazz or rock music with other people informally without planning it or practising together（与他人）即兴演奏爵士乐（或摇滚乐）

[ T + adv/prep ] to push something forcefully or with difficulty into something else把…塞入

C1 [ T + adv/prep ] to fill a place completely把…完全填满