Level of Evidence: Prognostic Level I.
证据等级：预后性一级证据。
Level of Evidence Therapeutic Level IV.
治疗性iv级。
Level of Evidence: Prognostic Level II.
证据等级：预后II级。
Study Design: Randomized, controlled trial; Level of evidence, 1.
研究设计：随机对照研究； 循证医学级别，1级。
There is evidence, at both an individual and a country level, of a relationship between income and happiness.
有证据显示，从个人到国家层面，收入和幸福之间都有一定关系。
This evidence from the cell level supports the investigation on behavioral level of the rat.
从细胞水平上得到的这一证据支持行为水平上的结果。
But there is plenty of evidence for an optimal temperature at the micro level.
但在微观层面有最适宜温度的大量证据。
But there is plenty of evidence for an optimal temperature at the micro level.
但在微观层面有最适宜温度的大量证据。
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