实际上在弦理论中，非对易几何自然地出现在至少三种不同而又密切相关的背景里。
Indeed, noncommutative geometry has arisen in at least three distinct but closely related contexts in string theory.
实际上在弦理论中，非对易几何自然地出现在至少三种不同而又密切相关的背景里。
Indeed, noncommutative geometry has arisen in at least three distinct but closely related contexts in string theory.
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