The rehearsal studio is buzzing with lunchtime activity.

　　排練場被午餐時段活動搞得很熱鬧。

　　If the weather is wet or cold choose an indoor activity.

　　如果下雨或是天氣寒冷，就選擇室內(nèi)活動。

　　He had been engaging in some kind of kinky sexual activity.

　　他一直在進(jìn)行一些反常的性活動。