我发现，数十年的调查并没有发现任何证据表明，家庭作业对小学生是有益的。
I discovered that decades of investigation have failed to turn up any evidence that homework is beneficial for students in elementary school.
研究人员排除了三分之二的最初参与者，因为他们在调查开始时似乎没有任何明确的学习风格。
The researchers excluded 2/3 of the original participants, because they didn't seem to have any clear learning style from the survey at the beginning.
他说他没有做错任何事，不应该受到刑事调查。
He said he had done nothing wrong to merit a criminal investigation.
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