隘口 (ài kǒu) — mountain pass; narrow strategic passage

Definition

Examples

• 军队必须通过那个隘口才能到达山谷。
  Jūn duì bì xū tōng guò nà ge ài kǒu cái néng dào dá shān gǔ.
  The army had to go through that mountain pass to reach the valley.
• 这个隘口地势险要，易守难攻。
  Zhè ge ài kǒu dì shì xiǎn yào, yì shǒu nán gōng.
  This pass has a strategically dangerous terrain, easy to defend and hard to attack.
• 古时候商队常走这条隘口。
  Gǔ shí hou shāng duì cháng zǒu zhè tiáo ài kǒu.
  In ancient times, merchant caravans often traveled through this pass.