中国是世界第一人口大国，也是出生缺陷高发国家。

The number of Chinese population is the biggest in the world, with a high incidence of birth deficiencies.

youdao

中国是世界第一人口大国，也是出生缺陷高发国家。

The number of Chinese population is the biggest in the world, with a high incidence of birth deficiencies.

youdao