signal
noun /ˈsɪɡnəl/
/ˈsɪɡnəl/
- a movement or sound that you make to give somebody information, instructions, a warning, etc.
信号；暗号 - a danger/warning/distress signal
危险/警告/遇险信号 - at a signal At an agreed signal they left the room.
收到约定的信号后，他们离开了房间。 - signal to somebody She made an impatient signal to him, but he ignored her.
她向他做了一个不耐烦的手势，但他不理她。 - signal to do something He thought he had heard the referee's signal to proceed.
他认为他听到了裁判发出的继续进行的信号。 - signal for somebody to do something The siren was a signal for everyone to leave the building.
警报器一响，就是要所有人离开大楼。 - signal (that)… We spotted the scout's signal that four enemy soldiers were coming towards us.
我们发现了侦察兵的信号，四名敌军正向我们走来。 - signal from somebody Wait for the signal from the leader of your group.
等你们组的组长发出信号。 - When I give the signal, run!
我一发信号，你就跑！ - (North American English) All I get is a busy signal when I dial his number (= his phone is being used).
我什么时候拨他的电话听到的都是忙音。 - hand signals (= movements that cyclists make with their hands to tell other people that they are going to stop, turn, etc.)
（骑车人和驾车人的）示意手势
- At a pre-arranged signal, everyone started cheering.
按照预先约好的信号，大家都开始欢呼起来。 - He had arranged a signal for the band to begin.
他约定了乐队开始演奏的信号。 - She made a signal for the car to stop.
她打了个手势，让汽车停下了。 - The insect's yellow spots act as a warning signal to its predators.
昆虫身上的黄点是向其天敌发出的警告信号。 - The brain interprets the signals from the retina as light.
大脑把来自视网膜的信号解读为光。 - The nerves carry these signals to the brain.
神经把这些信号传给大脑。
Collocations Dictionaryadjective- clear
- unmistakable
- agreed
- …
- give (somebody)
- make
- send
- …
- come from something
- indicate something
- at a signal
- on a signal
- signal for
- …
- a danger/warning/distress signal
- a piece of equipment that uses different coloured lights to tell drivers to go slower, stop, etc., used especially on railways and roads
（尤指铁路和公路上的）指示灯，信号灯，红绿灯 - The traffic signals were on red.
交通信号亮着红灯。 - a stop signal
停车信号 - Delays are occurring as a result of signal failure on the northbound line.
由于北行线路信号故障，延误正在发生。
Collocations Dictionaryadjective- railroad
- railway
- traffic
- …
- operate
- be on red/green
- be red/green
- fail
- …
- box
- failure
- The traffic signals were on red.
- a series of electrical waves that carry sounds, pictures or messages, for example to a radio, television or mobile phone
（传输声音、图像或其他信息的电波）信号 - radio signals
无线电讯号 - TV signals
电视信号 - a digital signal
数字信号 - a high-frequency signal
高频信号 - a radar signal
雷达信号 - to emit a signal
发射信号 - to detect/pick up signals
探测到／收到信号 - I couldn't get a signal on my phone.
我的手机收不到信号。 - The signal is received by three different antennas at slightly different times.
信号由三个不同的天线在稍微不同的时间接收。 - The satellite is used for transmitting signals around the world.
这颗卫星用于向世界各地传送信号。 - signal from something The signal from the transmitter seems to have been boosted.
发射机发出的信号似乎增强了。
Topics TV, radio and newsb2- It is possible to jam GPS signals in battle.
在作战时对全球定位系统的信号进行干扰是可能的。 - The digital signal travels down wires to the server.
数字信号沿着线路传到服务器。 - The signal is scrambled into code before it is sent.
发送信号之前要先扰码，把它变成密码。 - This equipment can detect very low frequency signals.
这种设备能够探测甚低频信号。 - a faint signal from the satellite
卫星发出的微弱信号
Collocations Dictionaryadjective- faint
- weak
- strong
- …
- carry
- pass
- relay
- …
- travel
- fade
- intensity
- strength
- signal from
- signal to
- radio signals
- an event, an action, a fact, etc. that shows that something exists or is likely to happen
标志；预示；信号 - signal (that)… The rise in inflation is a clear signal that the government's policies are not working.
通货膨胀率的上升清楚地表明，政府的政策不起作用。 - The court has given a strong signal that it disagrees with the government's position.
法院发出了强烈的信号，表明它不同意政府的立场。 - signal of something Chest pains can be a warning signal of heart problems.
胸部疼痛可能是心脏病的先兆。 - Reducing prison sentences would send the wrong signals to criminals.
减刑会向犯罪分子发出错误的信号。
Synonyms signsign- indication
- symptom
- symbol
- indicator
- signal
- sign an event, an action or a fact that shows that something exists, is happening or may happen in the future:
- Headaches may be a sign of stress.
头痛可能是紧张的迹象。
- Headaches may be a sign of stress.
- indication (rather formal) a remark or sign that shows that something is happening or what somebody is thinking or feeling:
指标示、象征： - They gave no indication as to how the work should be done.
他们根本没说明这项工作该怎样做。
- They gave no indication as to how the work should be done.
用 sign 还是 indication？ - symptom a change in your body or mind that shows that you are not healthy; a sign that something exists, especially something bad:
- Symptoms include a sore throat.
症状包括嗓子疼。 - The rise in inflation was just one symptom of the poor state of the economy.
通胀上升不过是经济不景气的一个征候。
- Symptoms include a sore throat.
- symbol a person, an object or an event that represents a more general quality or situation:
- The dove is a universal symbol of peace.
鸽子普遍象征着和平。
- The dove is a universal symbol of peace.
- indicator (rather formal) a sign that shows you what something is like or how a situation is changing:
指指示信号、标志、迹象： - the economic indicators
经济指标
- the economic indicators
- signal an event, an action or a fact that shows that something exists, is happening or may happen in the future:
- Chest pains can be a warning signal of heart problems.
胸部疼痛可能是心脏病的报警信号。
- Chest pains can be a warning signal of heart problems.
用 sign 还是 signal？ - a(n) sign/indication/symptom/symbol/indicator/signal of something
- a(n) sign/indication/symptom/indicator/signal that…
- a clear sign/indication/symptom/symbol/indicator/signal
- an obvious sign/indication/symptom/symbol/indicator
- an early sign/indication/symptom/indicator/signal
- an outward sign/indication/symbol
- to give a(n) sign/indication/signal
- Interviewers quickly learn to pick up non-verbal signals.
采访者很快学会读懂非语言信号。 - The remark was interpreted as a signal that their government was ready to return to the peace talks.
该言论被视作政府准备重回和平谈判的信号。 - Try to read the signals coming from the patient.
要尽量读懂病人发出的信号。 - the signals that can indicate danger
可能预示危险的信号
Collocations Dictionaryadjective- clear
- unmistakable
- agreed
- …
- give (somebody)
- make
- send
- …
- come from something
- indicate something
- at a signal
- on a signal
- signal for
- …
- signal (that)… The rise in inflation is a clear signal that the government's policies are not working.
词源noun late Middle English: from Old French, from medieval Latin signale, neuter of late Latin signalis, from Latin signum ‘mark, token’. The verb dates from the early 19th cent.