脑脊液：脑室系统及脑和脊髓周围的无色透明液体。
Cerebrospinal fluid (CSF) : Clear, colourless liquid that surrounds the brain and spinal cord and fills the Spaces in them.
性状：无色透明的粘稠液体。
漆树被切割后，流出来的汁液叫作“大漆”，无色的液体在空气中氧化后会变成半透明的褐色。
If it is cut, a kind of liquid called "big lacquer" flows out. The colorless liquid then becomes oxidized in the air and turns translucent brown.
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