1. Methods A questionnaire survey was conducted among 592 reproductive-age women selected by cluster stratify sampling in Northern rural areas, Anhui. 方法选择安徽省某市某区2个乡镇整群抽取5个行政村的育龄妇女共592人进行一对一问卷调查。
2. To stratify powers of the three new and old corporate committees respectively; To amplify the law systems, and to improve the mechanism of external governance. “新老三会”分权合并制衡以及健全法制，完善外部治理机制。
3. Objective To investigate the value of pregnancy-associated plasma protein-A (PAPP-A) level for the risk stratify and prognosis of the metabolic syndrome (MS) patients. 目的探讨血清妊娠相关蛋白A（PAPP-A）水平对代谢综合征（MS）患者危险分层和预后判断的价值。
英英解释
v.
1. divide society into social classes or castes
2. form layers or strata
3. develop different social levels, classes, or castes
4. form, arrange, or deposit in layers
5. render fertile and preserve by placing between layers of earth or sand
