汽车天窗作为行车时换气的便利设备，已经逐渐成为各个汽车厂家生产轿车的标准配置。

As a convenient facility for ventilation in driving, skylight has become standard configuration of many kinds of cars made by every auto plant.

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确切地说，任何包含换边呼吸的方式都是“双侧换气”，因此，一侧换气2次或3次然后转换到另一侧换气的是“双侧换气”。

Actually anything that involves swapping sides is bilateral. So breathing 2 or 3 times to one side then swapping to the other side is bilateral.

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该系统还有探测各种来自动物或工厂不良气味的功能，并且能够按照需要自动打开换气装置。

The system will also be able to detect various other bad smells - such as from animals and factories - and will automatically switch the ventilation on if required.

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