cervical air-sac

 
  • 颈气囊

cervical air-sac的用法和样例:

例句

  1. Air bags are a standard feature in most new cars.
    气囊是绝大多数新车具有的基本特点。
  2. Air bags are designed to soften the impact of a car crash.
    气囊用来减轻汽车碰撞的冲击力。

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