已到九月了，树叶开始凋落。

September had come and the leaves were starting to fall.

《牛津词典》

那年九月份肯兹尤斯在伊利开始了治疗，去南方过冬时他们就去佛罗里达州的一个医院继续治疗。

Kanzius started treatments in Erie that September and continued them at a hospital in Florida when he and Marianne went south for the winter.

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九月，当它朝南运转的时候，在北半球秋天就开始了；同样，南半球的春天刚开始。

When it's heading south, in September, it marks the onset of autumn in the north and spring in the south.

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