A : Heads up! Here comes the ball.
     - 조심해. 공 날아온다.

B : Where? I can't see it.
     - 어디? 안 보이는데.

A : OK now. It's about to hit your head.
     - 괜찮아 이젠. 머리를 칠 뻔했어.

B : Thank you so much.
     - 고마워.