a.

1. 有益的；有利的；有帮助的[（+for/to）]
   It would be beneficial to keep abreast of developments in Asia.

   跟上亚洲形势的发展会有帮助。

2. 【律】有权益的；受益的
   beneficial legacy

   有权受益的遗产

adj.

1. favourable or advantageous.
2. Law  relating to rights to the use or benefit of property, other than legal title.