Each year there are approximately 250 ball boys and girls (BBGs) at Wimbledon, with an average age of 15 years.

温布顿每年大约有近250名的球童，他们的平均年龄在15岁左右。

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Each year there are approximately 250 ball boys and girls (BBGs) at Wimbledon, with an average age of 15 years.

温布顿每年大约有近250名的球童，他们的平均年龄在15岁左右。

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