The weather in autumn is usually cool and comfortable.
秋天的天氣通常涼爽又舒適。
It gets cooler in the evening, so please bring a jacket.
傍晚會變得比較涼，所以請帶一件外套。
Let's drink some cool water after P.E. class.
體育課後我們來喝點涼水吧。
Alishan is one of the coolest places in Taiwan in summer.
阿里山是台灣夏天最涼爽的地方之一。