construction workers descended the vertical dropshafts to inspect the tunnel.
建筑工人下到垂直溜井中检查隧道。
the mine utilizes two main dropshafts for ore extraction.
该矿利用两个主溜井进行矿石开采。
engineers designed new dropshafts to improve the sewer system.
工程师设计了新的跌水井以改善排水系统。
heavy rain flooded the drainage dropshafts yesterday.
昨天的暴雨淹没了排水跌水井。
concrete dropshafts are essential for this hydroelectric project.
混凝土竖井对于这个水电项目至关重要。
safety regulations require covers for all unused dropshafts.
安全法规要求所有未使用的溜井必须加盖。
ventilation pipes were installed within the deep dropshafts.
通风管道安装在深溜井内。
the plumber cleared the debris blocking the dropshafts.
水管工清理了堵塞跌水井的杂物。
we need to measure the depth of these dropshafts.
我们需要测量这些竖井的深度。
water flows rapidly through these spillway dropshafts.
水流快速流过这些溢洪道竖井。
old dropshafts pose a significant risk to hikers.
旧溜井对徒步旅行者构成重大危险。
construction workers descended the vertical dropshafts to inspect the tunnel.
建筑工人下到垂直溜井中检查隧道。
the mine utilizes two main dropshafts for ore extraction.
该矿利用两个主溜井进行矿石开采。
engineers designed new dropshafts to improve the sewer system.
工程师设计了新的跌水井以改善排水系统。
heavy rain flooded the drainage dropshafts yesterday.
昨天的暴雨淹没了排水跌水井。
concrete dropshafts are essential for this hydroelectric project.
混凝土竖井对于这个水电项目至关重要。
safety regulations require covers for all unused dropshafts.
安全法规要求所有未使用的溜井必须加盖。
ventilation pipes were installed within the deep dropshafts.
通风管道安装在深溜井内。
the plumber cleared the debris blocking the dropshafts.
水管工清理了堵塞跌水井的杂物。
we need to measure the depth of these dropshafts.
我们需要测量这些竖井的深度。
water flows rapidly through these spillway dropshafts.
水流快速流过这些溢洪道竖井。
old dropshafts pose a significant risk to hikers.
旧溜井对徒步旅行者构成重大危险。
探索常用高频词汇