Chipp
[人名] 奇普
🗣️ 情景例句
Hi.
你好！
It was after dark when we got back,and we were all tired.
我们回来时天已经黑了，并且我们都很疲倦。
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。