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nounverbadjective a danger/warning/distress, etc. signal危险、警告、求救等信号 At an agreed signal they left the room. 收到约定的信号后，他们离开了房间。 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。 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 and drivers 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 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。 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。 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。 traffic signals交通信号灯 a stop signal停车信号 Delays are occurring as a result of signal failure on the northbound line. TV signals电视信号 a high-frequency signal高频信号 a radar signal雷达信号 to detect/pick up signals探测到／收到信号 to emit a signal发射信号 I couldn't get a signal on my cell phone. 我的手机接收不到信号了。 The satellite is used for transmitting signals around the world.Headaches may be a sign of stress. 头痛可能是紧张的迹象。 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。 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。 The dove is a universal symbol of peace.鸽子普遍象征着和平。 the economic indicators经济指标 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。 Reducing prison sentences would send the wrong signs to criminals. A strong buy signal was issued to traders. All I get is a busy signal when I dial his number. 我什么时候拨他的电话听到的都是忙音。 At a pre-arranged signal, everyone started cheering. He had arranged a signal for the band to begin. Interviewers quickly learn to pick up non-verbal signals. It is possible to jam GPS signals in battle. Laughing when you should be crying sends out the wrong signals to people. She made a signal for the car to stop. The brain interprets the signals from the retina as light. The digital signal travels down wires to the server. The insect’s bright colours act as warning signals to its predators. The insect’s yellow spots act as a warning signal to its predators. The nerves carry these signals to the brain. The remark was interpreted as a signal that their government was ready to return to the peace talks. The signal is scrambled into code before it is sent. The traffic signals were on red. This equipment can detect very low frequency signals. Try to read the signals coming from the patient. Wait for the signal from the leader of your group. When I give the signal, run! 我一发信号，你就跑！ a faint signal from the satellite the signals that can indicate danger 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。 a danger/distress signal hand signals（骑车人和驾车人的）示意手势 Don't fire until I signal. 等我发出信号后再开枪。 Did you signal before you turned right? 右转弯前你示意了吗？ signal (to somebody) (for something) He signalled to the waiter for the bill. 他示意服务员结账。 signal to/for somebody to do something He signalled to us to join him. 他示意要我们去他那儿。 The patrolman signalled for her to stop. signal somebody to do something She signalled him to follow. 她示意他跟她走。 signal something The referee signalled a foul. 裁判鸣哨示意犯规。 signal (that)… She signalled (that) it was time to leave.她示意该走了。 signal which, what, etc… You must signal which way you are going to turn. 你要朝哪个方向转，必须发出信号。 This announcement signalled a clear change of policy. 这个声明显示政策有明显的改变。 The scandal surely signals the end of his political career. 毫无疑问，这桩丑闻预示他的政治生涯就此结束。 signal something He signalled his discontent by refusing to vote. 他拒绝投票以示不满。 signal (that)… She has signalled (that) she is willing to stand as a candidate.她表示愿意作为候选人参加竞选。 A change of mind in one instance does not necessarily signal a change in overall policy. A fall in demand does not necessarily signal the death of the industry. He raised his hand and signalled for the waiter. I saw her signal frantically to us. She signalled frantically to us. She signalled to the bus driver to stop. These changes clearly signal the end of the welfare state as we know it. These events appeared to signal the end of an era. This address was meant to signal a change in policy. Always make sure you signal before you start to turn. Don’t fire until I signal. 等我发出信号后再开枪。 Joe signalled to us to join him. Many animals use their tails to signal. She signalled that it was time to leave. The referee seemed to be signalling a foul. When I’m ready I’ll signal with a flashlight. a signal honour极大的荣誉 a signal failure of leadership |