It's about an 8-foot-long tube of metal, it's got a hundred or so holes on top, on that side is the speaker, and here is some lab tubing, and it's connected to this tank of propane.
这玩意儿大约是由8尺长的金属做成 在它的顶部又有差不多一百个小洞 另一边是个话筒,这块儿 是一些实验用的管子,而且是和这个装满丙烷 的容器连接的