circulation
noun
ˌsɜːkjʊəˈleɪʃən
noun
1
the
movement
of
blood
around
your
body
血液循环
singular 单数, U
Exercise
improves
the
circulation.
运动有助于促进血液循环。
good/bad
circulation
Doctors
had
to
remove
her
leg
because
of
bad
circulation.
她的一条腿血液循环不畅，医生只得将其切除。
2
the
exchange
of
information,
money
etc
from
one
person
to
another
in
a
group
or
society
〔资料、货币等的〕流通
U
in/out
of
circulation
Police
believe
there
are
thousands
of
illegal
guns
in
circulation.
警方相信有成千上万支非法枪支在流通。
The
book
was
taken
out
of
circulation.
这本书已经不再流通了。
remove/withdraw
sth
from
circulation
The
Treasury
Department
plans
to
remove
older
coins
from
circulation
and
replace
them
with
new
ones.
财政部打算从市场上收回旧硬币，以新的硬币取代它们。
3
the
average
number
of
copies
of
a
newspaper
or
magazine
that
are
usually
sold
each
day,
week,
month
etc
〔报纸或杂志的〕发行量，销售量
C, usually singular 一般用单数
[+
of
]
The
newspaper
has
a
daily
circulation
of
55,000.
这份报纸的日发行量是 5.5 万份。
4
the
movement
of
liquid,
air
etc
in
a
system
〔液体、空气等的〕流通，环流，循环
C,U
Let’s
open
the
windows
and
get
some
circulation
in
here.
我们把窗打开，让这里的空气流通一下。
5
in circulation/out of circulation
when
someone
takes
part
or
does
not
take
part
in
social
activities
at
a
particular
time
[非正式] 〔某人一段时间内〕参加/不参加社交活动
informal
Sandy’s
out
of
circulation
until
after
her
exams.
桑迪直到考完试以后才参加社交活动。