"fifthly, we must adhere to the rules set by the local government"
fifthnum.第五n.五分之一
fifth disease传染性红斑
fifth-wheel半拖车接轮
Fifth Monarch基督王国
Fifth Crusade第五次十字军东征(1217-1221)
Fifth Republic第五共和国(成立于1958年)
fifth monarchy第五王国
fifth ventricle[医] 第五脑室, 透明膈腔
Fifth Air Force第五航空队
fifth postulate第五公设