“空”的拼音？

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我去踢球却踢了个空。I went to kick the ball and I completely missed it.房间仍然很简朴，四面都是饰有圆点的绿色空墙。The room remains simple with bare, stippled green walls.她带他参观了这处空房子的底楼。She showed him around the ground floor of the empty house....