缺乏身体活动是全球第四大死亡高危因素。

Physical inactivity is the fourth leading risk factor for global mortality.

youdao

目的探讨围生儿死亡的高危因素。

Objective to investigate the high dangerous factors of perinatal death.

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目的探讨围生儿死亡的高危因素。

Objective to investigate the high dangerous factors of perinatal death.

youdao