英语词汇“ballast”的读音、翻译、释义、用法及例句-出国留学网

词汇	ballast
释义	ballast /ˈbæləst \|\|; ˈbæləst/noun [U] heavy material placed in a ship or HOT-AIR BALLOONto make it heavier and keep it steady 压舱物，压载物（使船或热气球重心稳定）
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