短语词组短语roll -in point 开始转弯点;攻击进入点Roll balls in sugar 滚球进糖Roll -in shower 卷在淋浴;宠物活动场所的;大床;唱名表决在淋浴roll management in universities 高校学籍管理roll on in cycles 周而复始cover or roll up in 包扎;包起来;裹紧 返回 roll in