- 問題詳情:Onceuponatime,ahippo(河馬)livedinarivernexttoabigtree.Oneday,abirdcameandnested(築巢)inthetree.Thesongsofthebirdfilledthehippowithsomuchenvy(羨慕)thathecouldn’tthinkofanythingelse.Everydayhewouldthinkwhyhewasn’tborntobeabirdeventhoughthebirdtoldhimman...
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