![Fouryearsago，alobster(龍蝦)fisherman，GaryNichols，hadnever...]( "Fouryearsago，alobster(龍蝦)fisherman，GaryNichols，hadnever...")
- 問題詳情：Fouryearsago，alobster(龍蝦)fisherman，GaryNichols，hadneverseenalionfish，buttodayhistrapsarefullofthem．Hecatchessomanylionfishnowthathe’sstartedtosellthem．Whilehislobsterssellfor$16perkilogram，lionfishonlymakehim$12.Lionfisharecausingagreatconcernonh...
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