So the function of these endothelial cells is to regulate vascular tone and to regulate solute exchange and extravasation or transport of molecules across that endothelial layer.

因此，这些内皮细胞的功能是调张力以及调溶质交换和外渗，或者说是子穿过该内皮层的运输。

The fourth is consolidating. Qi can prevent blood from extravasation and regulate the secretion and excretion sweat, urine, saliva, gastric juice, intestinal juice and sperm in order to avoid unnecessary loss.

固摄作。以防止液外渗， 调汗液、尿液、唾液、胃液、肠液和精子的泌和排泄， 以避免不必要的损失。