目的：研究束旁核、中央中核在痛觉调制中的作用及作用机理。

Objective: Our aim was to study the effects of centromedian nucleus(CM) and central lateral nucleus(CL)on pain and their mechanisms.

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图示中央静脉旁的肝小叶中央部，肝细胞体积缩小或缺氧坏死。

Here is the centrilobular portion of liver next to a central vein. The cells have reduced in size or been lost from hypoxia.

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卡特莫尔太太蹒跚地走到台下中央那张孤零零的椅子旁。

Mrs. Cattermole stumbled to the single seat in the middle of the floor beneath the raised platform.

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