B2 [ I or T ] to move easily and without interruption backwards and forwards or from one side to the other, especially from a fixed point, or to cause something or someone to do this摆动，摇摆，摇晃

[ I or T ] to move an object or your fist in an attempt to hit something or someone挥动（拳头或器物）打击

[ I ] to change改变，变化

[ I ] informal to be exciting and enjoyable令人兴奋；欢快热闹

[ I or T ] to play music in a strong, exciting style like jazz, or (of music) to be played in this way（尤指爵士乐）有强烈节奏感；（乐手）演奏（尤指节奏感强烈的爵士乐）

[ T ] informal to arrange for something to happen, by persuading people and often by acting slightly dishonestly（常指通过稍有些不诚实的手段）设法办成，安排

[ C ] a swinging movement摆动，摇摆，摇晃，摇荡

[ C ] an attempt to hit someone（为打某人而）挥舞，挥动，挥拳

[ C ] a change改变，变化

B2 [ C ] a seat joined by two ropes or chains to a metal bar or a tree, on which you can sit and move backwards and forwards秋千

[ U ] a type of dance music that was popular in the 1930s and 40s（流行于20世纪30和40年代的）摇摆乐