如果天气太热或者湿度太大而不能在外面跑步，在跑步机上跑步或者尝试另外一种活动，比如游泳。
If it's too hot and humid to run outside, move your runs indoors to the treadmill or try a different activity, like swimming.
“目的”被定义为一项活动为之进行的目标，而“过程”则是达成目的的一种方式。
'purpose' is defined as the objective for which an activity is carried on, and 'process,' as a means of accomplishing purpose.
过去十年来，食物已经越来越成为一种活动，而不是家庭杂务。
Over the past decade, food has become more of an activity than a chore.
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