汽车制造商稍后召回更多数百万辆车辆替换汽车加速踏板，说它可能会受阻。

The carmaker later recalled millions more vehicles to replace gas pedals that it said could stick.

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第一次涉及问题汽车490万辆，出现问题的汽车脚垫会使加速踏板松开时发生卡滞。

The first, involving 4.9 million cars, was triggered by a problematic floor mat that could come loose and jam the gas pedal open.

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