剑桥词典 tartar noun (SUBSTANCE) [ 不可数或单数名词：没有复数形式的名词 ] a hard substance that forms on the teeth 牙石，牙垢 tartar noun (PERSON) [ 可数名词：有复数形式的名词 ] old-fashioned disapproving a person who is often angry and unkind 凶暴的人，凶悍的人 返回 tartar