一旦火车车速超过后者，火车被自动减速。

The train is automatically slowed down if the latter speed is exceeded.

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开发出一种汽车轮胎气压监测与爆胎自动减速系统。

A tire pressure monitoring and automatic deceleration system for tire blow-out is developed.

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救护车将其数字信号广播到前方的汽车网络中，甚至可以使它们自动减速并靠边。

Ambulances will digitally broadcast their out-of-my-way signal into cars ahead or even require them to automatically slow down and pull over.

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