[ T ] also freshen up to make something cleaner and/or cooler使洁净,使凉爽
She opened a window to freshen up the room.她打开一扇窗户给屋里换换空气。
[ I ] UK If a wind freshens, it becomes stronger and cooler.(风)增强变冷
The wind is expected to freshen as it moves in from the east.预计在自东向西移动的过程中风力会增强。