短語(yǔ)詞組短語(yǔ)main propelling force 主要推動(dòng)力propelling force from outside 外部拉動(dòng)continual propelling force 持續(xù)推動(dòng)力A driving or propelling force 推進(jìn)力一種驅(qū)動(dòng)或推進(jìn)的力量 返回 propelling force