new
prop (up) a roof的英文翻譯是什么意思，詞典釋義與在線(xiàn)翻譯：
英英釋義
名詞 prop:
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a support placed beneath or against something to keep it from shaking or falling
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any movable articles or objects used on the set of a play or movie
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a propeller that rotates to push against air
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support by placing against something solid or rigid
