秋天 (qiū tiān): ฤดูใบไม้ร่วง; ฤดูใบไม้ร่วง; ฤดูใบไม้ร่วง (ฤดูกาล)

Autumn has come, the weather is cool.

Autumn is the season of harvest.

My favorite season is autumn.

The leaves in autumn are yellow.

I like to go hiking in autumn.

The maple leaves in autumn are especially red.

Autumn has arrived, and the weather is gradually getting cooler.