据美国娱乐软件协会(esa)统计，在2002年和2003年电子游戏的总销售额中，M级游戏的销售额占12%。
Total sales of M-rated games have held steady at around 12 percent of all games sold in 2002 and 2003, according to the Entertainment Software Association.
据美国娱乐软件协会(esa)统计，在2002年和2003年电子游戏的总销售额中，M级游戏的销售额占12%。
Total sales of M-rated games have held steady at around 12 percent of all games sold in 2002 and 2003, according to the Entertainment Software Association.
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