基本解释[经济学]轻型耙词组短语短语light disc harrow 轻型圆盘耙light tined harrow 轻型钉齿耙extra -light seed harrow 特轻型播种耙light spring toothed harrow 轻型弹齿耙light spiked chain harrow 轻型钉齿网状耙专业释义经济学轻型耙