这个词是什么意思？
Paired but separate cavity within the THORACIC CAVITY. It consists of the space between the parietal and visceral PLEURA and normally contains a capillary layer of serous fluid that lubricates the pleural surfaces.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D035422 · MeSH 2026。
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