尽管故事还有一点曲折，但这一点是至关重要的。

There is another little twist to the story, though, and it's a crucial one.

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折度是计量声调曲拱的基本单位。

Bend degree is a basic unit to measure tonal arch degree.

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折度是计量声调曲拱的基本单位。

Bend degree is a basic unit to measure tonal arch degree.

youdao