beneficial/ˌbenɪˈfɪʃl; ˌbɛnə`fɪʃəl/ adj~ (to sth/sb) having a helpful or useful effect; advantageous 有益的; 有用的; 有好处的 a beneficial result, influence, etc 有益的结果、影响等 Fresh air is beneficial to one's health. 新鲜空气有益於健康.
牛津英汉双解词典