signal
noun
verb
adj
ˈsɪɡnəl
noun
1
a
sound
or
action
that
you
make
in
order
to
give
information
to
someone
or
tell
them
to
do
something
信号; 暗号
signal
(for
sb)
to
do
sth
When
she
got
up
from
the
table,
it
was
obviously
the
signal
for
us
to
leave.
她从桌边站起来，这显然是要我们离开。
The
headmaster
gave
the
signal
to
begin.
校长示意开始。
At
a
prearranged
signal
the
lights
went
out.
预定的信号一发出，灯就全灭了。
2
an
event
or
action
that
shows
what
someone
feels,
what
exists,
or
what
is
likely
to
happen
信号; 标志; 预示
signal
(that)
These
results
are
a
signal
that
the
child
may
need
special
help.
这些结果表明这个孩子可能需要特殊的帮助。
[+
of
]
The
opinion
poll
is
a
clear
signal
of
people’s
dissatisfaction
with
the
government.
此次民意调查清楚地表明了民众对政府的不满。
The
display
flashed
a
red
warning
signal
.
显示器闪了一下红色的警示信号。
A
red
flag
is
often
used
as
a
danger
signal.
红色旗帜常常用作危险信号。
send/give
a
signal
This
will
send
the
wrong
signal
to
potential
investors.
这会给潜在投资者发出错误的信号。
3
a
series
of
light
waves,
sound
waves
etc
that
carry
an
image,
sound,
or
message,
for
example
in
radio
or
television
〔无线电、电视等的〕讯号，信号
send
(out)
/transmit/emit
a
signal
(to
sb)
This
new
pay-TV
channel
sends
signals
via
satellite
to
cable
companies.
这个新的付费电视频道通过卫星把讯号发送到有线电视公司。
In
the
1970s
it
was
illegal
to
transmit
fax
signals
via
the
public
telephone
system.
20 世纪 70 年代用公共电话系统发送传真讯号是违法的。
receive/pick
up/detect
a
signal
a
small
antenna
which
receives
radio
signals
接收无线电讯号的小型天线
The
Coast
Guard
picked
up
a
distress
signal
from
a
freighter
50
miles
out
at
sea.
海岸警卫队接收到一艘离海岸 50 英里的货船发来的求救讯号。
4
a
piece
of
equipment
with
coloured
lights,
used
on
a
railway
to
tell
train
drivers
whether
they
can
continue
or
must
stop
〔铁路的〕信号灯，指示灯
a
stop
signal
停车信号灯
a
signal
failure
(=when
these
lights
do
not
work)
信号灯故障
verb
5
to
make
a
sound
or
action
in
order
to
give
information
or
tell
someone
to
do
something
发信号，打信号; 示意
I,T
She
signalled,
and
the
waiter
brought
the
bill.
她打了个手势，侍者就拿来了账单。
The
whistle
signalled
the
end
of
the
match.
哨声吹响，示意比赛结束。
[+
at
]
Mary
signalled
wildly
at
them,
but
they
didn’t
notice.
玛丽拼命向他们做手势，但他们没注意到。
[+
to
]
The
judge
signaled
to
a
police
officer
and
the
man
was
led
away.
法官向一位警察示意，于是那个人就被带走了。
[+
for
]
He
pushed
his
plate
away
and
signalled
for
coffee.
他把盘子推开，并示意要杯咖啡。
signal
(to)
sb
to
do
sth
She
signalled
to
the
children
to
come
inside.
她示意孩子们进来。
signal
that
The
bell
signaled
that
school
was
over.
铃声响起，放学了。
6
to
make
something
clear
by
what
you
say
or
do
–
used
in
news
reports
〔用语言或行动〕表明，表示〔用于新闻报道〕
T
Both
sides
have
signaled
their
willingness
to
start
negotiations.
双方都表明愿意开始谈判。
British
sources
last
night
signalled
their
readiness
to
talk.
英国方面昨晚表示愿意对话。
signal
(that)
The
Prime
Minister’s
speech
today
signals
that
there
will
be
a
shake-up
in
the
cabinet.
首相今天的讲话表明内阁将进行改组。
7
to
be
a
sign
that
something
is
going
to
happen
标志着，预示
T
signal
the
start/beginning/end
of
sth
the
lengthening
days
that
signal
the
end
of
winter
白天变长标志着冬天的结束
8
to
show
the
direction
you
intend
to
turn
in
a
vehicle,
using
the
lights
〔车辆转方向时〕打灯示意;
I | AmE
Signal
before
you
pull
out.
驶离路边时先要打灯示意。
adj
9
important
[正式] 重要的
signal
achievement/success/failure
etc
The
university
has
done
me
the
signal
honour
of
making
me
an
Honorary
Fellow.
这所大学给了我极大的荣誉，授予我荣誉董事的头衔。