老师把学生按照学习能力细分为三个小组。

The teacher subdivided the students into three groups based on their learning abilities.

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The teacher subdivided the students into three groups based on their learning abilities.

subdivided 是动词 subdivide 的过去式。subdivide 由前缀 sub-(表示"进一步、再")和动词 divide(划分)组成,字面意思是"再划分",即"细分"的意思。subdivided 在这里表示"被细分成"的动作。

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