Labradoritite
拉长岩
🗣️ 情景例句
I am for that.
我赞成。
When I saw Mr. Jones,he was talking with John Smith.
当我看见琼斯先生时，他与约翰·史密斯正在谈话。
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。