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鸡蛋从小号到特大号分成不同等级。
他们被随机分为四组,并被置于不同等级的背景噪音环境中,从完全寂静到有50分贝、70分贝和85分贝的噪音。
They were randomly divided into four groups and exposed to various noise levels in the background, from total silence to 50 decibels, 70 decibels, and 85 decibels.
她注意到,不同等级的公共教育体系都确实存在高质量 STEM 教育的缺失。
She noticed there was a real void in quality STEM education at all levels of the public educational system.
You know, there's like different rankings of leagues you can play in.
你可以在不同等级的联队里打球。
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