effective
adj
ɪˈfektɪv
adj
1
successful,
and
working
in
the
way
that
was
intended
有效的; 产生预期效果的;
The
cheaper
drugs
are
just
as
effective
in
treating
arthritis.
较便宜的药品对治疗关节炎同样有效。
the
painting’s
highly
effective
use
of
colour
图画中采用的强烈的色彩效果
Training
is
often
much
less
effective
than
expected.
训练常常大大低于预期的效果。
the
most
effective
ways
of
reducing
inner
city
congestion
减少市中心交通拥挤最有效的办法
2
if
a
law,
agreement,
or
system
becomes
effective,
it
officially
starts
〔法律、协议或制度〕生效的
no comparative 无比较级, not before noun 不用于名词前
[+
from
]
The
cut
in
interest
rates
is
effective
from
Monday.
利率下调从星期一正式生效。
3
real
rather
than
what
is
officially
intended
or
generally
believed
实际的，事实上的
no comparative 无比较级, only before noun 仅用于名词前
The
rebels
are
in
effective
control
of
the
city.
反叛者实际上已控制了该市。