duple基本解释
adj.二倍的;双重的;[音]双拍子的
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adj.二倍的;双重的;[音]双拍子的
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"an egg with a double yolk"
"a double (binary) star"
"double doors"
"dual controls for pilot and copilot"
"duple (or double) time consists of two (or a multiple of two) beats to a measure"