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例句 DEFINITIVE EXAMPLES 权威例句〔spiral〕A curve on a plane that winds around a fixed center point at a continuously increasing or decreasing distance from the point.螺线:平面上逐渐远离或靠近一固定中心点时不断回旋的曲线美国传统〔tailstock〕The movable part of a lathe that supports the dead center.尾架:车床上支撑固定中心的活动部分美国传统
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