salutary

salutary
/ˈsæljutrɪ; ?@ -terɪ; `sæljʊˌtɛrɪ/ adj
having a good effect 有益的
    salutary exercise, advice 有益的锻炼、 劝告
    The accident is a salutary reminder of the dangers of climbing. 这一事故有益的一面是提醒了我们攀登活动是有许多危险的.

牛津英汉双解词典