新东方-柯林斯雅思备考词典

signal

英  [ˈsɪɡnəl]
    

[NOUN, VERB]

    NOUN. 名词
  • signals

    1[C 可数名词] 信号

    A signal is a gesture, sound, or action which is intended to give a particular message to the person who sees or hears it.

    双语例句

    例:

    They fired three distress signals.

    他们发射了3次遇难求救信号。

    例:

    As soon as it was dark, Mrs Evans gave the signal.

    天一黑,埃文斯夫人就发出了信号。

    2[C 可数名词] 信号

    If an event or action is a signal of something, it suggests that this thing exists or is going to happen.

    近义词

    sign

    双语例句

    例:

    Kurdish leaders saw the visit as an important signal of support.

    库尔德领导人把这次访问看作是表示支持的重要信号。

    3[C 可数名词] 铁路的信号灯

    A signal is a piece of equipment beside a railway, which indicates to train drivers whether they should stop the train or not.

    双语例句

    例:

    A signal failure contributed to the crash.

    信号灯的故障导致了这次撞车事故。

    4[C 可数名词] (传输信息的无线电、光波或电流)信号

    A signal is a series of radio waves, light waves, or changes in electrical current which may carry information.

    双语例句

    例:

    high-frequency radio signals.

    高频无线电信号。

    例:

    a means of transmitting television signals using microwave frequencies.

    采用微波频率发送电视信号的方式。

    VERB. 动词
  • signals , signalling , signalled

    1[I 不及物动词] (打手势或发出声音)向…示意 , 发信号

    If you signal to someone, you make a gesture or sound in order to send them a particular message.

    双语例句

    例:

    Mandy started after him, signalling to Jesse to follow.

    曼迪开始追赶他,并示意杰西跟上。

    例:

    She signalled to Ted that she was moving forward.

    她向特德示意她要前进了。

    2[T 及物动词] 表示

    If someone or something signals an event, they suggest that the event is happening or likely to happen.

    近义词

    indicate

    双语例句

    例:

    He seemed to be signalling important shifts in US government policy.

    他似乎在暗示美国政府的政策将会有些重大变化。

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