Passerby

英 [ˌpɑːsəˈbaɪ] 美 [ˌpæsərˈbaɪ]

n. 過路人，經過者

[ 複數 passersby ] ^[1] 

passerby y 過路人 ; 路人

sought the help of passerby 尋求路人的協助

passerby stranger 路人

Strange passerby 陌生的過路人

I am a passerby 我是一個路人甲

Has been the passerby 一直以來的路人甲 ^[1] 

1、The 23-year-old's screams alerted a passerby who went to her rescue. 那名23歲女孩的尖叫聲引起了一個過路人的警覺，他救了她。

2、A passerby described what he saw moments after the car bomb had exploded. 一個過路人描述了汽車炸彈爆炸後瞬間他所看到的情景。

3、You are supposed to look at a passerby just enough to show that you are aware of his presence. 當你觀察一個過路人的時候，能夠表明你意識到他的存在就可以了。 ^[1]