After binge-watching shows last night, her bloodshot eyes looked tired this morning.

bloodshot 是由 blood（血）和 shot（射击、发射）组成的复合形容词，字面意思是"像被血染红的"。用来形容眼睛因疲劳、饮酒或发炎而充血发红的状态，即"布满红血丝的"。