gross blow hole

例句：

1. 1.The rock formation has a gross blow hole that looks like a giant mouth.
   这个岩石形成物有一个粗口喷孔，看起来像一个巨大的嘴巴。
2. 2. The scientist discovered a gross blow hole in the cave system.
   科学家在洞穴系统中发现了一个粗口喷孔。
3. 3. The engineer had to repair the gross blow hole caused by the earthquake.
   工程师不得不修理地震造成的粗口喷孔。