beneficial
adj
ˌbenɪəˈfɪʃəl◄
adj
1
having
a
good
effect
有利的，有帮助的，有用的;
a
drug
that
has
a
beneficial
effect
on
the
immune
system
有益于免疫系统的一种药物
[+
to/for
]
Cycling
is
highly
beneficial
to
health
and
the
environment.
骑自行车对于身体和环境大有裨益。
an
arrangement
that
is
mutually
beneficial
(=it
has
advantages
for
everyone
who
is
involved)
一项互惠互利的协定