词典释义：
释义
plural noun
a device with an air bag that emits a stream of air when squeezed
褶式风箱，手压吹风器。
(亦作
推拉式风箱。
a kind used in a harmonium or small organ
（簧风琴或小风琴的）皮腔，风箱。
an object or device with concertinaed sides to allow it to expand and contract, such as a tube joining a lens to a camera body
（照相机等的）伸缩皮腔；伸缩式波纹管。
词源
"Middle English： probably from Old English