self-purification activity自净活性

self-care activity自理活动

self-generating activity自发活动

self-practice activity自主实践活动

early self-care activity早期自我护理活动

method of self-activity自行活动教学法;自动教学法

individual self-evaluation activity个体自我评价活动

sinus-node self-activity窦房结自律性

adolescent star light self-protection activity青春期星光自护行动