The framework was constructed of brass tubing and it held a gasbag of rubberized fabric.
它的骨架是黄铜管做的，上面连接着一个橡胶气囊。
2
As he gets nearer to the pulsing sphincter of a mouth, he starts to hack at the gasbag overhead.
但他还是离水母蠕动的嘴唇越来越近，他开始砍向头上的气囊。
3
Since the gasbag is added, the pressure increase within the hydraulic chamber is very slight when the string collar passes through the packing element.