A group of children were randomly divided into two classes.

一群孩子被随机分成两个班。

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Galaxies can be divided into two classes: normal galaxy (NG) and active galaxy (AG).

星系通常分为正常星系(NG)与活动星系(AG)两类。

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It can be further divided into two classes: direct experience and simulated experience.

它又可分成直接体验和模拟体验两类。

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At each level of education, from kindergarten to university, classes are now divided into tinier segments, generally composed of two to four students each.

CNN: ASIANOW - TIME Asia