Girls become sexually mature earlier than boys.

女孩比男孩性成熟早。

《牛津词典》

Girls generally reach sexual maturity two years earlier than boys.

女孩子通常比男孩子早两年达到性成熟。

《柯林斯英汉双解大词典》

In Western countries girls are far less likely to offend than boys.

在西方国家，女孩们远不像男孩们那样容易犯罪。

《柯林斯英汉双解大词典》

"In those countries, more girls than boys actually scored above the ninety-ninth percentile in math.

VOA: special.2010.04.01

It's a kind of "our boys are better than your boys" device.

就像是我们家的小孩肯定比你们家的好。

耶鲁公开课 - 旧约导论课程节选

By two thousand seven,however, the numbers were down to less than ten percent of boys and only eight percent of girls.

VOA: special.2009.07.06

Generally speaking, girls with autism have greater learning disabilities and more problems academically than boys.

CNN: How girls and boys differ when it comes to autism

Any problem usually starts before a child is five, and affects more girls than boys.

BBC: Health

This may be one reason why South African girls score worse than boys in exams.

ECONOMIST: South Africa: Wolves in teachers’ hats | The