Definition
To dispel feelings of tiredness and lethargy, typically by engaging in outdoor activities or physical exercise.
（通过呼吸新鲜空气或运动） 消除疲劳，振作精神
After a long day at work, he decided to take a walk on the beach to blow the cobwebs away.
在漫长的一天工作后，他决定去海滩散步，让自己振作精神。
I'm feeling a bit sluggish; I think I need to go for a run to blow the cobwebs away.
我觉得有点懒散；我想我需要去跑步让自己清醒一下。
After weeks of working indoors, the weekend hike really blew the cobwebs away.
在室内工作了几周后，周末的徒步旅行真的让我精神振奋。