🗣️ 情景例句
How can anybody get a word in around here?
在这里谁有机会插话呢？
Is the departure time on schedule?
起飞时间准时吗？
and we control it by means of the mud which we circulate down the drill pipe.
我们让泥浆顺着钻杆向下循环，用这种方法来控制压力。