英文词源
- beneficial (adj.)
- mid-15c., "helpful, advantageous," from Middle French bénéficial and directly from Latin beneficialis "pertaining to a favor," from beneficium (see benefice). Related: Beneficially.
中文词源
词根bene, 好。fic, 做，同fact.
该词的英语词源请访问趣词词源英文版：beneficial 词源，beneficial 含义。
词根词缀： bene-好 + -fic-做,作 + -ial形容词词尾
