A: Hugh... It's really hot these days.
    - 휴... 요즘 너무 더운 것 같아.

B: You think? Wait until the real summer comes.
    - 그렇게 생각해? 여름 돼 봐 더해 그땐.

-> Wait until he comes 그가 올 때까지 기다려. Wait (stick) around 기다려

Hold on / Hang on 잠깐만