Cavities
n. 腔, 洞( cavity的名词复数 ); （龋齿的）洞
✅ 同义词
🗣️ 情景例句
Hello.... Hello, Alexandra. How are you? ... Fine.
好……Alexandra。你好吗 ……很好。
Spoil (or Lose) the ship for half penny worth of tar.
因小失大。
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。