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up-down

英['ʌpd'aʊn] 美['ʌpd'aʊn]
  • adj.升降

双语例句

    用作形容词 (adj.)
    1. Window cleaners are pulled up and down tall buildings on cradles.
      窗户清洁工乘坐能升降的吊篮清洗高层建筑物的窗子。
    2. The Looper Thread Take-up can make it up and down for threading easy.
      升降式底线分线盘,使穿线更容易。

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