英语词汇step-down怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	step-down
释义	step-down /ˈstepdaʊn/ n. \| a. I n. (数量等的)减少；(强度等的)减低 a step-down in dosage 剂量的减少 II a. 1. 逐渐减少的，逐渐减低的 2. 【电】减压的 a step-down transformer 降压变压器 3. (齿轮传动)减速的
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