Chartlet
小海图
🗣️ 情景例句
That's reassuring.
真令人安心。
A fool may give a wise man counsel.
愚者千虑，必有一得。
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。