长春客车厂是中国第一大，世界第五大轨道车辆制造商。
Changchun Passenger car manufactory is China first big, world fifth big track vehicles manufacturer.
这就意味着重型车辆制造商将能够从车辆排放量低于该规定的制造商那里赊购排放量。
That means makers of heavier cars will be able to buy emissions credits from producers whose fleet is below the limit.
一位欧盟官员告诉记者，所谓的共同限排“曲线斜率”意味着重型车辆制造商比轻型车辆制造商付出的要多。
An EU official told reporters the so-called "slope of the curve" in sharing emissions cuts meant makers of heavier vehicles would have to do more than manufacturers of lighter cars.
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