flat out

US /flæt aʊt/

UK /flæt aut/

A2 初級
phr.片語全力以赴
I am going to run flat out at the end of the race
adj.形容詞非常忙碌
I've been flat out at work all week.
adv.副詞全速
He ran flat out to catch the bus.
adv.副詞斷然地
She flat out refused to go.

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