现代医疗技术及药理学研究的进步大大降低了人口死亡率。

We're dying less often because of the technological and pharmacological advances of modern medicine.

youdao

现代医疗技术及药理学研究的进步大大降低了人口死亡率。

We're dying less often because of the technological and pharmacological advances of modern medicine.

youdao