noun🔗Share第四名，第四个 (not used in the plural) The person or thing in the fourth position."The fourth in line at the school cafeteria was a girl with a bright purple backpack. "在学校食堂排队队伍里的第四个是个背着亮紫色背包的女孩。numberpositionessentialChat with AIVocabulary GamePractice Reading
noun🔗Share四分之一，四分部. (chiefly American) A quarter, one of four equal parts of a whole."My brother got a fourth in his class. "我弟弟的成绩排在班里的前四分之一。numbermathamountpartessentialChat with AIVocabulary GamePractice Reading
noun🔗Share四挡 (not used in the plural) The fourth gear of an engine."The mechanic said the car's engine needed a new fourth gear. "机械师说这辆车的发动机需要一个新的四挡。vehicletechnicalmachineessentialChat with AIVocabulary GamePractice Reading
noun🔗Share四度音程 A musical interval which spans four degrees of the diatonic scale, for example C to F (C D E F)."The musician played a beautiful fourth between the two notes. "这位音乐家用两个音符演奏了一个优美的四度音程。musicsoundessentialChat with AIVocabulary GamePractice Reading
adjective🔗Share第四，老四 The ordinal form of the number four."My fourth-grade teacher had a lot of patience. "我四年级的老师非常有耐心。numbermathessentialChat with AIVocabulary GamePractice Reading
