The pleurae are serous membranes, which mean they secrete a lubricating fluid, called serous fluid.
胸膜为浆膜,这意味着它们可



液体,即浆液。
声明:以上例句、词性分类均由互联网资源自动生成,部分未经过人工审核,其表达内容亦不代表本软件的观点;若发现问题,欢迎向我们指正。

词汇分频周计划 
词汇
The synovium's composed of loose connective tissue, blood vessels, lymphatic vessels, and on the surface—" Type A" cells that clear cellular debris and " Type B" cells that produce components of synovial fluid, which helps lubricate the two articular surfaces.

由松散结缔组织、血管、淋巴管组成;在
表面,A型细胞清理细胞碎屑,B型细胞产生
液成分,
液能够润
两块关节的表面。
英语短文