adj. 有益的，有利的;可享利益的
例句：
1、I have mentioned a number of times the beneficial effects of music played to the unborn child.
我已數次談及給未出生孩子播放音樂的益處。
2、He had a beneficial influence on the children.
他對孩子們產生了有益的影響。
短語：
1、to have a beneficial effect on sth 對…有益;有益于…
例句：Using computers has a beneficial effect on children's learning.
使用計算機對孩子們的學習有益。
2、beneficial to sth 對…有益的
例句：Wine in moderation is beneficial to health.
適量飲酒有益健康。