目前美国本土老化的车辆共有约2.37亿辆，与以往经济衰退期间出产的车相比，这些车更耐用，也更易于修理。
The aging of the domestic fleet of about 237 million vehicles has been made possible by cars that are more durable and can be repaired more easily than in past recessions.
目前美国本土老化的车辆共有约2.37亿辆，与以往经济衰退期间出产的车相比，这些车更耐用，也更易于修理。
The aging of the domestic fleet of about 237 million vehicles has been made possible by cars that are more durable and can be repaired more easily than in past recessions.
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