单词：air cell
only.
A receptacle of air in various parts of the system; as, a
cell or minute cavity in the walls of the air tubes of the lungs; the
air sac of birds; a dilatation of the air vessels in insects.
air cell的用法和样例：
例句
- 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。
- 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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