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常见例句

用作形容词 (adj.)

• 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。
• 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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