When Maria Sharapova won the Australian Open last month, most commentators remarked on her intensity, her competitive spirit, her dogged approach to the game.

• 当玛利亚.；莎拉波娃上个月赢得澳大利亚公开赛的时候，很多评论家认为这来源于她强烈的夺冠欲望和顽强的比赛精神。