After a day of air and activity, you should be in the mood for a good meal.
在户外活动了一天，你应该想好好吃一顿。
《柯林斯英汉双解大词典》
2
Australian climatologist will Steffens argued that climate change caused by human activity will fundamentally alter the air, land and oceans for tens of thousands of years.
澳大利亚气候学家威尔·斯蒂芬斯辩称，由人类活动引起的气候变化将完全地改变数万年的空气、土壤和海洋。
3
But you, dear reader, are indulging right now in activity that is equally as polluting as air travel: using a computer.