oulet hole

例句：

1. 1. The tunnelwas so narrow that only a smalloulet could be seen through the darkness.
   隧道非常狭窄，只能通过一个小孔看到黑暗。
2. 2. The car's engine is leaking oil, and we need to findan oulet to fix it.
   汽车的引擎正在漏油，我们需要找到一个孔来修理它。
3. 3.The old house has severaloulets in its walls, whichare used for ventilation.
   这座老房子的墙壁上有几个孔，用于通风。