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One shouldn't bang one's head against a brick wall when the task is hopeless.
See correct answer
One shouldn't bang one's head against a brick wall when the task is hopeless.
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Related words
bang one's head against a brick wall
Verb
idiomatic
intransitive
Japanese Meaning
無駄な努力をする / 徒労に終わる試みをする / 意味のない試みに力を注ぐ
Related Words
（ present singular third-person ）
（ participle present ）
（ participle past ）
（ past ）
English - English
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