口哨 (kǒu shào) — whistle (the instrument or the sound made by whistling)

定義

例文

• 他吹了一声口哨。
  Tā chuī le yī shēng kǒu shào.
  He blew a whistle.
• 裁判用口哨宣布比赛开始。
  Cái pàn yòng kǒu shào xuān bù bǐ sài kāi shǐ.
  The referee used a whistle to announce the start of the game.
• 我听到一声清脆的口哨。
  Wǒ tīng dào yī shēng qīng cuì de kǒu shào.
  I heard a clear and crisp whistle sound.