基本解释adj.陞降同根派生 up-down相关词英汉例句用作形容詞 (adj.)Window cleaners are pulled up and down tall buildings on cradles.窗戶清潔工乘坐能陞降的吊籃清洗高層建築物的窗子。The Looper Thread Take-up can make it up and down for threading easy.陞降式底線分線磐,使穿線更容易。up-down更多例句