洞井是一个汉语词汇，读音是dòng jǐng，意思是深洞，出自《被褐守山东》。
你适应洞井铺的生活了吗？
在长沙市洞井中学选取初三年级两个自然班，分别为实验班与对照班。
We selected two three-grade natural classes from Dongjing Junior Middle School in changsha, divided into the experimental class and the control class.
大斜度井可供选择的下泵位置有在垂直段安装，在造斜段安装、在稳斜段安装、在分支鼠洞井眼安装。
Well intervals where lift pumps can be located in highly deviated Wells include vertical interval, deflecting interval, Angle maintaining interval and branch rat hole.
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