n.类似风琴的六角形的乐器
v.(像)折起
Tango dancers take their steps, accompanied by a musician with a concertina. 探戈舞蹈者记录他们的步幅,陪伴的是一位音乐家用一六角形风琴。
The lorry had concertinaed after crashing into the tree. 卡车撞到大树后摺在一起。