knock one's head against the wall
тратить время, пытаясь безуспешно сделать что-либо
Пример использования идиомы knock one's head against the wall:
I've been knocking my head against the wall for a week, trying to write a good essay.
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Другие идиомы:
- knock (someone) off
- knock (something) off
- knock (someone) dead
- knock about
- knock (someone's) block off
- knock (someone) down (to size)
- knock on wood
- knock (someone or something) out
- knock (someone) around
- knock-down-drag-out fight
- knock oneself out
- knock some heads together
- knock (someone) off their feet
- knock down the price of (something)
- Knock it off!