intravenousWiktionary 原文中文来自 ECDICTadj.静脉内的构词拆分intra-前缀Within a single entity indicated by the root word: · A direction that is inward or into the location indicated by the root word.+venous词根/词干词源说明From intra- + venous.释义（英文）形容词 AdjectiveInside the veins.名词 Noun(medicine) A dose of medicine administered from a drip, down through a hollow needle inserted into a patient's vein.词族派生词（1）