“竖井”怎么读？

“竖井”的英语可以翻译为：pothole，aven，cenote，silo ...

竖井已经打下，并且挖有横向矿道。Shafts were sunk, with tunnels dug laterally.空气向下进入竖井,因而失去势能.The air flows down to a shaft and thus loses potential energy.潜水员于上周末进入竖井,但没什么进展.Divers headed into the shafts over the weekend but made little...