同根派生 under class相关词英汉例句Is thought be a car belonging to the lower class in the U.S.在美國會被看成是屬於下層堦級的。The upperclassman and his underclass mothers learned together in cooking class.高年級的學生和他的下層堦級的母親一起在烹飪課上學習。under class更多例句