1.  hole
2.  cavity
3.  clear
4.  thorough
5.  profound

• 1. 黑洞: black hole | black hole
• 2. 风洞: wind tunnel | wind channel | air tunnel
• 3. 洞穴: cave | grotto

更多释义

• 1.香烟把地毯烧了个洞。
  The cigarette burned a hole in the carpet.
  dict.yoduao.com
• 2.球滚进了洞，她赢了。
  The ball rolled into the hole and she had won.
  dict.yoduao.com
• 3.有人在墙上打了个洞。
  Someone had knocked a hole in the wall.
  dict.yoduao.com

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