The researchers also selected at random a control group of 478 children who weren't given reading books.
研究人员还从那些没有获得阅读书籍的孩子们中随机挑选了478名作为对照组。
Millions of receptors in the nose's smelling organ aren't scattered at random, a new study says.
一项新的研究表明，鼻腔内数以百万计的嗅觉受体并不是随机分布的。
I will collect the notebooks at random, a few at a time, so please always bring your notebook to class with you.
我会不定期抽查笔记，所以务必带着笔记本来上课。
I will collect the notebooks at random, a few at a time, so please always bring your notebook to class with you.
我会不定期抽查笔记，所以务必带着笔记本来上课。
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