efficiency
noun
ɪˈfɪʃənsi
noun
1
the
quality
of
doing
something
well
and
effectively,
without
wasting
time,
money,
or
energy
效率; 效能;
U
[+
of
]
the
efficiency
of
the
train
service
火车服务的效率
considerable
advancements
in
energy
efficiency
能源效率的显著提高
2
efficiencies
the
amounts
of
money,
supplies
etc
that
are
saved
by
finding
a
better
or
cheaper
way
of
doing
something
功效
plural 复数
operating
efficiencies
运营功效