孔洞 (kǒng dòng) — hole, cavity, opening (in a solid object or surface)

Definition

Examples

• 墙上出现了一个孔洞。
  Qiáng shàng chū xiàn le yí gè kǒng dòng.
  A hole appeared in the wall.
• 这块岩石上有很多孔洞。
  Zhè kuài yán shí shàng yǒu hěn duō kǒng dòng.
  This rock has many cavities.
• 工程师用特殊材料填补了那个孔洞。
  Gōng chéng shī yòng tè shū cái liào tián bǔ le nà ge kǒng dòng.
  The engineer filled that hole with special material.