passerby
n. 过路人，经过者
复数 passersby
例句
The 23-year-old's screams alerted a passerby who went to her rescue.
那名23岁女孩的尖叫声引起了一个过路人的警觉，他救了她。
《柯林斯英汉双解大词典》
A passerby described what he saw moments after the car bomb had exploded.
一个过路人描述了汽车炸弹爆炸后瞬间他所看到的情景。
You are supposed to look at a passerby just enough to show that you are aware of his presence.
当你观察一个过路人的时候，能够表明你意识到他的存在就可以了。
