Blockaderunner
[法] 穿越对锁线者
🗣️ 情景例句
I can't.
我不敢读。
Nothing is more precious than time.
世上最宝贵的莫过于光阴。
and we have to lower into the ground and haul out of the ground great lengths of drill pipe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom.
我们必须把很长的钻杆一节节地钻入地下，然后再从地下拉出来。钻杆顶部安装的发动机带动钻杆旋转，它的底部装有钻头。