大会战

Traditional (Taiwan): 大會戰

dàhuìzhàn ㄉㄚˋ ㄏㄨㄟˋ ㄓㄢˋ

    • big concentrated effort by many forces to complete a major task quickly

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Saying俗语俗語

Idiom惯用语 · Widely known

Literally
great decisive battle
Meaning
A big concentrated effort by many forces to complete a major task quickly. Often used for campaigns and projects.

Sources