three-through pump 三联泵
three through pump
三通泵
以上为机器翻译结果，长、整句建议使用 人工翻译 。
But Obama said yesterday that the car would pay for itself within three years through lower prices at the petrol pump.
但是奥巴马昨天说这些额外的成本会通过3年之内从加油站里省下来。
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