Next, blood get drained from these spaces by small emissary veins, which drain into the deep dorsal vein.
接下来，血液从这些间隙通过小的导静脉流出，这些血液会流入背深静脉。
英语百科
Emissary veins
（重定向自Emissary vein）
The emissary veins connect the extracranial venous system with the intracranial venous sinuses. They connect the veins outside the cranium to the venous sinuses inside the cranium. They drain from the scalp, through the skull, into the larger meningeal veins and dural venous sinuses. They are common in children.
近义、反义、联想词
近义词
n.
vein, vena, venous blood vessel
英英词典
emissary vein n.
one of several connecting veins in the scalp and head that drain blood from sinuses in the dura mater to veins outside the skull