For reasons that have very little to do with literature and far more to do with me clinging to the plot as I first imagined it, Hermione with Ron. 罗琳:我要说的是,我写罗赫的关系是一种 个人愿望的满 … Hermione Granger undergraduate 假设动脉中质量守恒、steady-flow mass flow rate (density*velocity*cross-sectional area)是constant的 颈总动脉被夹住,横截面积减小,流速将增 …