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单词 支轴
例句 DEFINITIVE EXAMPLES 权威例句〔chair〕Any of several devices that serve to support or secure, such as a metal block that supports and holds railroad track in position.支轴:一种用来支撑和固定的装置,如支持和固定路轨保持原位的金属块美国传统〔fulcrum〕The point or support on which a lever pivots.支点:杠杆的支点或支轴美国传统
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