这是一个清爽的秋日。

It was a ___crisp autumn day.

那是这些美丽的清爽九月日子之一，树林被秋日的棕色和金色装点。

It was one of these beautiful ___crisp September days when the woods are adorned in autumnal browns and golds.

清爽的冬季空气让我脸上感到清新。

The ___crisp winter air felt refreshing on my face.