单词 | up-and-down |
释义 | up-and-down —up-and-downness, n. /up"euhn down"/, adj. 1. moving alternately up and down: the up-and-down swing of levers; an up-and-down tune. 2. having an uneven surface: up-and-down countryside. 3. changeable: up-and-down luck. 4. perpendicular or nearly so: a straight up-and-down hillside. [1610-20] |
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