“这是来说明女孩们是如何这么早的进入青春期。”他说。

"This is an indication of how girls are going into puberty uncommonly early," he says.

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很多孩子进入青春期，首先会在对待父母的态度上出现巨大变化。

Many kids announce the onset of adolescence with a dramatic change in behavior around their parents.

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在欧洲，也采取这种极端的做法，以使得男孩在进入青春期时仍保持童声。

In Europe, such extreme practices were used to retain the singing qualities of boys as they moved into adolescence.

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