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- 問題詳情：Ourchildrenandgrandchildrenmaynothaveachancetovisitmanyofthemostfamousplacesaroundtheworld.War,weather,age,trafficandpollutiondamagethesefamousplaces.Lookingaftertheseplacesoftencostsmorethanonecountrycanafford.Intheearly1970s,worldgovernment...
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