- 问题详情:The30thOlympicGamestookplaceinLondonfromJulytoAugustin2012.Luckily,Chinese 1 fanscouldwatchtheexcitinggamesin3DonTV.Whenyouwatch3DmoviesorTV,youhavetoweara(n) 2 pairofglasses.The3Dglassesmakethepicturesfromthescreen 3 theyarethereinther...
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