The convenience store on the corner is open 24/7.
a tough break 倒霉的时期，难熬的时间
It was a tough break for us when Caroline quit. She was one of our top performers.
ASAP as soon as possible 尽快
I need to finish these reports. My boss needs them ASAP.
back to square one 从头再来，退回起点
After working for several hours, it turns out that the problem is something totally different, so it looks like we have to go back to square one.
call it a day 收工
Well, John, it's 7:00 and I'm getting hungry. How about we call it a day?