Definition

Examples

• 他们发现了一个洞口。
  Tāmen fāxiàn le yí gè Dòng kǒu.
  They discovered an entrance to a cave.
• 这个洞口很小，只能一个人进去。
  Zhège Dòng kǒu hěn xiǎo, zhǐ néng yí ge rén jìnqù.
  This cave entrance is very small, only one person can go in.
• 从洞口吹出来的风很凉。
  Cóng Dòng kǒu chuī chūlái de fēng hěn liáng.
  The wind blowing out from the cave entrance is very cool.