为分子生物学应用设计 Milli-Q Synthesis
学生分为新生、中级生或高级生。
Students are categorized as novice, intermediate, or advanced.
在研究中，402名来自纽约四所低收入地区高中的9年级和10年级的学生被分为三组。
In the study, 402 9th- and 10th-grade students from four New York City high schools in low-income areas were divided into three groups.
她让学生每四人分为一小组。
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