adverb🔗Share针对，在...之上 Being the target of an action."He was set upon by the agitated dogs"他被激动的狗群袭击了。actionpositionessentialChat with AIVocabulary GamePractice Reading
preposition🔗Share在...之上，在...上面 Physically above and in contact with."Place the book upon the table."把书放在桌子上面。positionplaceessentialChat with AIVocabulary GamePractice Reading
preposition🔗Share在...之上，在...上面 Physically directly supported by."She balanced upon one foot."她单脚站立，身体靠一只脚支撑着。positionplaceessentialChat with AIVocabulary GamePractice Reading
preposition🔗Share在...之后, 紧接着 Being followed by another so as to form a series."hours upon hours, years upon years, mile upon mile of desert"数小时之后又数小时，数年之后又数年，一英里又一英里的沙漠timelanguagegrammaressentialChat with AIVocabulary GamePractice Reading
preposition🔗Share在...之时，在...之际 At (a prescribed point in time)."The contract was rendered void upon his death."合同在他去世之际作废。timeessentialChat with AIVocabulary GamePractice Reading
preposition🔗Share在...之上, 在...上 On."The book sat upon the table. "书放在桌子上面。positionlanguageessentialChat with AIVocabulary GamePractice Reading
