英语词汇“up-and-down”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	up-and-down
释义	up-and-down (ŭp′ən-doun) adj. 1. Characterized by or exhibiting an alternating upward and downward movement. 2. Variable; changeable. 3. Vertical.
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