警笛声 (jǐng dí shēng) — sound of a siren (police, ambulance, or fire engine)

Definition

Examples

• 远处传来一阵警笛声。
  Yuǎn chù chuán lái yí zhèn jǐng dí shēng.
  A siren sound came from afar.
• 警笛声越来越近了。
  jǐng dí shēng Yuè lái yuè jìn le.
  The siren sound is getting closer and closer.
• 听到警笛声，大家赶紧让路。
  Tīng dào jǐng dí shēng, dà jiā gǎn jǐn ràng lù.
  Hearing the siren sound, everyone quickly made way.