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But since the middle of the century in particular, the music has become very irregular in rhythm. But since the middle of the century in particular, the music has become very irregular in rhythm.
但自本世纪中叶以来，这种音乐的节奏变得非常不规则。 但自本世纪中叶以来，这种音乐的节奏变得非常不规则。