研究员根据婴儿对痛苦的表达，对所谓的袋鼠式护理的效果进行了调查。
Researchers investigated the effect of so-called "kangaroo care" on the babies' expressions of pain.
研究共分四个步骤：第一，开放式问卷调查。
The research includes four parts: First, opened-questionnaire investigation.
研究共分四个步骤：第一，开放式问卷调查。
The research includes four parts: First, opened-questionnaire investigation.
应用推荐