Level I一级leveln.数量；等级；水平；水平线adj.平的；等高的v.弄平；夷平；对准adv.<废>水平地levelling colour均染染料level-overloadn.过载级；系统操作极限level assessment水平评估levelling harrow无齿耙leveled teaching分层次教学level separation电平区分leveling solvent均化溶剂level of details层次细节level of writing写作水平level population能级布居