noun🔗Share信号，讯号 A sequence of states representing an encoded message in a communication channel."The flashing red light was a signal that the school cafeteria was out of pizza. "闪烁的红灯是一个信号，表示学校餐厅的披萨卖完了。signalcommunicationtechnologyelectronicsessentialChat with AIVocabulary GamePractice Reading
noun🔗Share信号，讯号 Any variation of a quantity or change in an entity over time that conveys information upon detection."The flashing red light was a signal that the meeting was starting. "那个红色闪光灯是会议即将开始的信号。signalcommunicationelectronicstechnologyphysicsessentialChat with AIVocabulary GamePractice Reading
noun🔗Share信号，暗号。 A sign made to give notice of some occurrence, command, or danger, or to indicate the start of a concerted action."The flashing red light was a signal that the fire alarm had been triggered. "闪烁的红灯是火灾警报被触发的信号。communicationsignalsignactiontechnologymilitarypoliceessentialChat with AIVocabulary GamePractice Reading
noun🔗Share信号，讯号。 An on-off light, semaphore, or other device used to give an indication to another person."The traffic signal turned red, indicating it was time to stop. "交通信号灯变红了，表示该停车了。signaldevicecommunicationtechnologyelectronicsessentialChat with AIVocabulary GamePractice Reading
noun🔗Share信号，讯号 (of a radio, TV, telephone, internet, etc.) An electromagnetic action, normally a voltage that is a function of time, that conveys the information of the radio or TV program or of communication with another party."The radio signal was weak, making it difficult to hear the news report clearly. "收音机的信号很弱，所以很难听清楚新闻报道。technologyelectronicscommunicationsignalsoundmediainternetphysicstechnicalcomputingessentialChat with AIVocabulary GamePractice Reading
noun🔗Share信号, 讯号, 暗号 An action, change or process done to convey information and thus reduce uncertainty."The flashing lights were a signal that the school bus was approaching. "闪烁的灯光是一个信号，表明校车正在靠近。signalcommunicationtechnologyelectronicsinfosciencetechnicaldevicesystemessentialChat with AIVocabulary GamePractice Reading
noun🔗Share信号，征兆，迹象。 A token; an indication; a foreshadowing; a sign."The teacher's raised eyebrow was a signal that she wasn't happy with our answers. "老师扬起眉毛，这是一个信号，表明她对我们的答案不满意。signalsigncommunicationtechnologyelectronicsmediaessentialChat with AIVocabulary GamePractice Reading
noun🔗Share信号, 有用信息。 Useful information, as opposed to noise."The teacher's clear instructions were a useful signal, helping the students understand the math problem. "老师清晰的指示是一个有用的信号，帮助学生们理解了这道数学题。(Lǎoshī qīngxī de zhǐshì shì yī gè yǒuyòng de xìnhào, bāngzhù xuéshengmen lǐjiěle zhè dào shùxué tí.)signaltechnologycommunicationelectronicsinfoessentialChat with AIVocabulary GamePractice Reading
noun🔗Share信号，讯号 A simple interprocess communication used to notify a process or thread of an occurrence."The teacher sent a signal that class was starting. "老师发出了一个信号，示意要开始上课了。computingcommunicationtechnologysignalprocesssystemessentialChat with AIVocabulary GamePractice Reading
noun🔗Share信号，讯号传递，细胞通讯 A signalling interaction between cells"The hormone released by the mother's body was a crucial signal to the baby that it was time to be born. "母亲体内释放的激素是给婴儿的一个关键信号，提示婴儿分娩的时机已到。biologyphysiologybiochemistryessentialChat with AIVocabulary GamePractice Reading
verb🔗Share发出信号，示意。 To indicate; to convey or communicate by a signal."The teacher signaled for everyone to be quiet. "老师示意大家安静。communicationtechnologysignalactionessentialChat with AIVocabulary GamePractice Reading
verb🔗Share发信号，示意. To communicate with (a person or system) by a signal."Seeing the flames, he ran to the control room and signalled headquarters."看到火焰后，他跑到控制室，向总部发出了信号。communicationtechnologysystemsignalessentialChat with AIVocabulary GamePractice Reading
adjective🔗Share重要的，显著的 Standing above others in rank, importance, or achievement."a signal exploit; a signal service; a signal act of benevolence"一项意义非凡的功绩；一项特别重要的服务；一项格外突出的善举achievementvaluequalitypositionessentialChat with AIVocabulary GamePractice Reading
