采用随机选取和有针对性选取“散光”被试的方法，分别在两个实验组对个体的空间视敏度和时间视敏度进行测试。
In two teams, with random_groups design and specialized_groups design method, the experiment tests the subjects space visual acuity and horary visual acuity.
这一调查报告是WIN网站通过从每个国家选取有代表性的人群进行的。
The poll was conducted by WIN Network members among representative samples of the population in each country.
另一个全国性企业沃尔玛也选取了这种逐步改变个人健康的理念。
It's this idea of gradual change for personal health that's being picked up by another national institution, Walmart.
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