The posterior ethmoid cells are easily identified as they are larger, wider, and fewer in number than anteriorly.

后组筛窦的气房一般大而宽，在数量上也少于前组筛窦，容易确定。

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The posterior ethmoid cells are easily identified as they are larger, wider, and fewer in number than anteriorly.

后组筛窦的气房一般大而宽，在数量上也少于前组筛窦，容易确定。

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