短语词组短语motor steeper 步进电机rotary steeper [粮食]平转式浸泡器bridge steeper 桥枕steeper detail 浸渍者steeper slope 边坡较陡steeper terrain 陡峭地形half round steeper 半圆枕木a steeper slope 陡坡steeper slope mining 陡帮开采 返回 steeper