expression, noun
utter stranger; mere passerby; outsider
A set phrase emphasizing that someone is a complete stranger with no connection to oneself, often used in contexts of indifference or lack of obligation.
彼は私にとって路傍の人に過ぎない。
He is nothing more than a complete stranger to me.
困っている人を
Even if you see someone in trouble, you shouldn't just pass by like a mere passerby.