气囊用来减轻汽车碰撞的冲击力。
汽车若遇到正面猛烈撞击，安全气囊可以保护驾车者。
Airbags protect the driver in the event of a severe frontal impact.
例如，汽车制造商正在尝试使用微型设备，这些设备能够感知何时释放安全气囊，以及如何保持引擎和刹车有效运转。
Auto manufacturers, for example, are trying to use tiny devices that can sense when to release an airbag and how to keep engines and breaks operating efficiently.
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