某些国家有更多，其他没有那么多。

Some countries have more, others have not quite so many.

youdao

打个比方来说，如果某些国家有更多的女性处于研究性的岗位，那么那个国家的女生便更可能在数学方面表现优异并对她们的技能拥有自信。

For example, if certain countries had more women in research-related positions, the girls in that country were more likely to do better in math and feel more confident of those skills.

youdao