a.

1. 有益的，有利的
   The accident was a salutary lesson; I'll never drink and drive again.

   這一事故是一個有益的教訓；我再也不酒後開車了。

2. 有益健康的，強身的

adj.

1. (of something unpleasant or unwelcome) beneficial in providing an opportunity for learning from experience.
2. archaic health-giving.