Anasthol
安那妥耳
🗣️ 情景例句
We are.
我们是。
Thank you for you cooperation.
谢谢你们的合作。
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。