英语词汇ballast怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	ballast
释义	ballast bæləst  ˈbæləst  N-UNCOUNT 压舱物；镇重物 Ballast is any substance that is used in ships or hot-air balloons to make them heavier and more stable. Ballast usually consists of water, sand, or iron. 压舱物；镇重物 SYN counterbalance, balance, weight, stability Trends of ballast View usage for:All yearsLast 10 yearsLast 50 yearsLast 100 yearsLast 300 years
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