为了处理块引用，本示例将它表示为左右两边各有 1.5 厘米缩进且保持一倍行距的段。

To process a block quotation, the example renders it as a single-spaced paragraph with a 1.5-centimeter indentation on the left and right sides.

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为了处理块引用，本示例将它表示为左右两边各有1.5厘米缩进且保持一倍行距的段。

To process a block quotation, the example renders it as a single-spaced paragraph with a 1.5-centimeter indentation on the left and right sides.

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这两位研究人员表示，在打哈欠时，上颌窦的壁部(位于鼻子两边的脸颊上)像风箱一样弯曲，帮助大脑降温。

During yawning, the walls of the maxillary sinuses (located in the cheeks on each side of the nose) flex like bellows and help with brain cooling, according to the researchers.

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