Heliopolis
n. 黑里欧波里斯（尼罗河三角洲的古埃及城市）
🗣️ 情景例句
I can understand that.
我们能理解。
His health has been lousy.
他的健康状况近来很糟。
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。