Compared to the vacant group, all item have remarkable differences after 1 period of treatment and 3 period of treatment.

与空白对照组相比，各项指标在1个疗程及3个疗程后均有显著差异。

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Infected persons usually start with "flu-like" symptoms after an incubation period of 3-7 days.

在3 - 7天潜伏期之后，受感染者通常开始出现“流感样”症状。

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The second 3-year period of academic training is required for university admission.

第二个3年的学院训练是进入所大学必须的。

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So it's important to be here on time and stay throughout 3 hours' period.

一定不能迟到,每节课3个小时，不能早退。

麻省理工公开课 - 电影哲学课程节选

s1 So for the fourth period, now we're into the 4 s 1 3d for potassium here. And what we notice when we get to the third element in 4s2 and the fourth period is 3d that we go 4 s 2 and then we're back to the 3 d's.

对于第四周期到现在我们来到钾的1,然后我们返回到,我们注意到当我们看到第三个元素,第四周期我们来到,然后我们返回到。

麻省理工公开课 - 化学原理课程节选

Roger Ibbotson took a look at a larger group of funds -3,500--funds over a ten-year period and found survivorship bias at 2.9% per year and backfill bias at 4.6% per year.

罗杰·伊博森研究了更大的样本组,3500支基金10年间的表现,算出其生存偏差是每年2.9%,回填偏差是每年4.6%

耶鲁公开课 - 金融市场课程节选