signal

/ˈsɪɡnəl/ 名词 B1

中文：信号、讯号

A sequence of states representing an encoded message in a communication channel.
Any variation of a quantity or change in an entity over time that conveys information upon detection.
A sign made to give notice of some occurrence, command, or danger, or to indicate the start of a concerted action.
An on-off light, semaphore, or other device used to give an indication to another person.
A railway signal.
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. · My mobile phone can't get a signal in the railway station.
An action, change or process done to convey information and thus reduce uncertainty.
A token; an indication; a foreshadowing; a sign.

复数 signals

+ 加入复习

来自图书馆

Now, you rascal, do you deny that it is a signal?

The light is a signal to him that food is ready for him, and his light out yonder is to show the spot to which to bring it.”

Collins and Maria were gone on business into the village, when she was startled by a ring at the door, the certain signal of a visitor.

“He must have been holding it as a signal,” said I.

注册免费账号后，在图书馆中把鼠标悬停在任何单词上即可看到意思，还能听朗读、收藏单词并按你的记忆安排复习，看到每本书你已经认识多少。