那條紅線其實是台大醫院 ( That Metro Red line are actually First University Hospital, are they affiliate, or that is the name? )

在台北車站之前 = before the Taipei Main station

不只臺大醫院的人，應該有衛生局還是衛福部的人 = Not just that hostpital human there, there are Public Health, and Hygenic Department are there

看起來都是小孩的高中生 = they all looking like the children high school people

大部分是男孩子，剛下課那一天 = Most of them are guys, just got off the class that day

算早吧 ~ 4:20 = that is early they get off the class around 4:20