As soon as you arrive in weightlessness, the fluids start shifting in your body.

一旦您到达失重状态，体液就会开始在您体内移动。

A transudative pleural effusion occurs when too much fluid starts to leave the capillaries either because of increased hydrostatic pressure or decreased oncotic pressure in the blood vessels.

漏出性胸腔积液发生于大量液体漏出毛细血管，可能是因为血管内静水压增高或血管内胶体渗透压降低。