英语词汇“ballast”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	ballast
释义	ballast noun /ˈbæləst/ /ˈbæləst/ [uncountable] jump to other results heavy material placed in a ship or hot-air balloon to make it heavier and keep it steadyTopics Transport by waterc2 a layer of stones that makes a strong base on which a road, railway, etc. can be built Word Originmid 16th cent.: probably of Low German or Scandinavian origin.
随便看	orchid ordain ordeal order order_1 order_2 order about order-about order around order-around order book order-book ordered order form order-form ordering orderliness orderly orderly_2 order of chivalry order-of-chivalry order of magnitude order-of-magnitude Order Paper order-paper

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