hard rock concrete 中文意思是什麼
hard rock concrete
解釋
硬石混凝土-
To survive, key operational bases and weapons caches would have to be situated underground in fortified concrete bunkers or inside hard - rock mountains
要想倖免于難,重要作戰基地與武器儲藏庫必須設于地下,隱身在強化防禦的混凝土掩體或巖質堅硬的山中。
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