基本解释adj.升降同根派生 英汉例句用作形容词 (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。