Expression

길을 건널 때 마주친 친구에게 손을 흔들었는데 그 친구가 못 본 것 같았어.

I was waving at my friend I ran into while crossing the street, but it seemed like she didn't see me.

길가에 사람이 손을 흔들었는데, 운전 기사는 그냥 지나쳐 버렸어

Someone was waving by the roadside, but the driver just drove right past them.