translation.en: 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.
translation.zh: 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