秋天的早上空气很好，适合跑步。

Qiūtiān de zǎoshang kōngqì hěn hǎo, shìhé pǎobù.

The air is very good on autumn mornings, suitable for running.

我们打算秋天去中国旅游。

Wǒmen dǎsuàn qiūtiān qù Zhōngguó lǚyóu.

We plan to travel to China in autumn.

我最喜欢秋天，因为不冷也不热。

Wǒ zuì xǐhuān qiūtiān, yīnwèi bù lěng yě bù rè.

I like autumn the most because it’s neither cold nor hot.