bardzo zajęty 英語で:

We were swamped with visitors.

I really can't help you, I'm just swamped.

My better half screwed me over for being swamped.

through this stupid school I'm constantly swamped with duties

... Olympic Games they were swamped with volunteers.

I’ve been working flat out all day.

This car will hit about 110 miles per hour flat out / When I asked him about it, he flat-out denied it / He is a flat out geek

I’m totally flat out

I've been flat out at work. We've all been working flat out to finish the project on time.