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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
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更新时间:2024/10/22 23:47:26