Noun:

1. coiled barbed wire used as an obstacle

2. free-reed instrument played like an accordion by pushing its ends together to force air through the reeds

Verb:

1. collapse like a concertina

concertn.音乐会；一致；和谐vt.协定；协同安排vi.合作Concert for piano and orchestra大提琴协奏曲concerted acid-base catalysis酸碱协同催化作用Concert for George David Leland标签:乔治哈里森的音乐会concertrated observation method止观法Concert by Vermont Youth Orchestra美国佛蒙特州青年交响乐团音乐会Concert Multi-Thread Architecture多线一致结构Concert by Prague Sinfonia Orchestra捷克布拉格市立交响乐团上海音乐会Concerts foster interest in music.音乐会培养对音乐的兴趣。Concert by Cincinnati Pops Orchestra美国辛辛那提通俗交响乐团音乐会concertina method of tariff reduction伸缩的关税削减法

1. 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。

1. The lorry had concertinaed after crashing into the tree.
   卡车撞到大树后摺在一起。