Zhè zhī bùduì de fānhào shì dì qīshíjiǔ jítuánjūn.
This unit's designation is the 79th Group Army.
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Military meaning is the canonical one. In internet slang the same word is used for the catalog code of a Japanese AV release (e.g. 'SSIS-001'); context tells you which sense is meant. Use carefully.
