有益useful;beneficial;profitable
世界上所有國家的～的東西，我們都要學。We should learn what is useful from every country in the world./做一個～于人民的人be a person who is of value to the people/我們的會談（討論）是～的。Our talks (or discussions) have been useful./作出～的貢獻make useful contributions to/～地交換了意見have had a useful exchange of views/～于健康good for one’s health;beneficial to the health |