그림으로 보는 오늘의 이디엄(신체 3)

by word of mouth : 사람들의 입에서 입으로[구전으로]

So much is passed on by word of mouth.

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nerves of steel : 담력

You need a cool head and nerves of steel.

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easy on the eye : 보기 좋은

I paint the odd canvas, some of them even easy on the eye.

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heads will roll : 

(일어난 일에 대해) 그냥 넘어가지[두지] 않을 것이다.

But obviously the PR stunt has now backfired and heads will roll.

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weak at the knees : 

(격한 감정·공포·병 등으로)금방이라도 주저앉을 것 같은

Well, seven hours later, I was exhausted and weak at the knees. 

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play it by ear : 

(미리 계획을 세우기보다) 그때그때 봐서 처리하다

Hopefully we can carry on but we just have to play it by ear.