The next factor, though, is oncotic pressure; which is a type of osmotic pressure exerted by cells and proteins that can't cross the capillary membrane and therefore tend to attract fluid.

第二个因素是胶体渗透压，是渗透压中的一种，由细胞和蛋白质分子产生；细胞和蛋白质不能透过毛细血管膜，因此能够吸引水分。