Could be a million things. 有很多可能

302. Hey, you're on this. You understand me?
     这由你负责 明白我意思吗
303. - Vertiginous or light-headedness? - Light-headed.
     -是眩晕还是昏睡 -是昏睡
304. Sometimes he'd have to brace himself to get out of bed.
     有时候他要强撑着才能起床
305. Could be a million things.
     有很多可能
306. Simple orthostasis.
     可能是单纯的低血压
307. What?
     怎么了
308. What made him fall with a nail gun?
     那他怎么会拿着射钉枪摔下来

来自《实习医生格蕾 第一季 第四集 Grey's Anatomy S01E04》第 305 行