鸡蛋从小号到特大号分成不同等级。

Eggs are graded from small to extra large.

《牛津词典》

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.

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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.

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But after this umbrella level of equality come different types of people, and those different types of people are going to require different levels of rights. Gender, absolutely.

不过在这个平等的层面下,会有各类人等，这些形形色色的人会要求,不同层次的权利，性别肯定。

普林斯顿公开课 - 人性课程节选

Studies using imaging techniques like CAT scans, PET, and fMRI, illustrate that different parts of the brain are active during different parts of mental life.

应用电脑断层扫描,正电子发射断层扫描,以及功能性核磁共振成像,等成像技术的研究,表明不同的心理活动,会导致不同大脑区域的激活

耶鲁公开课 - 心理学导论课程节选

This is a center that cut across all of the MIT's Schools and departments, and tries to undertake innovative research in how different technologies, computer technologies, and communicational technologies can be used in educational settings.

这个中心的研究贯穿于,所有麻省理工的院系,研究不同的技术，计算机技术,通讯技术等,如何能够被不同地应用于,教育领域。

麻省理工公开课 - 媒体、教育、市场课程节选