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      魏碑心思朗文詞典
      簡(jiǎn)體 繁體

      signal

      S 開頭單詞四級(jí)詞匯四級(jí)核心詞六級(jí)核心詞考研高頻詞專四核心詞專八核心詞雅思備考詞托福詞匯高考詞匯

      柯林斯詞典

        signal /?s?ɡn?l/ (signalling,signalled,signals)

      • 1. N-COUNT A signal is a gesture, sound, or action which is intended to give a particular message to the person who sees or hears it. 信號(hào)

        They fired three distress signals. 他們發(fā)射了3次遇難求救信號(hào)。

        As soon as it was dark, Mrs. Evans gave the signal. 天一黑,埃文斯夫人就發(fā)出了那個(gè)信號(hào)。

      • 2. V-T/V-I If you signal to someone, you make a gesture or sound in order to send them a particular message. (打手勢(shì)或發(fā)聲音) 向…示意; 發(fā)信號(hào)

        Mandy started after him, signalling to Jesse to follow. 曼迪開始追趕他,示意杰西跟上。

        She signalled to Ted that she was moving forward. 她向特德示意她要向前走。

      • 3. N-COUNT If an event or action is a signal of something, it suggests that this thing exists or is going to happen. 信號(hào)

        Kurdish leaders saw the visit as an important signal of support. 庫(kù)爾德領(lǐng)導(dǎo)人把這次訪問(wèn)看作是表示支持的重要信號(hào)。

      • 4. V-T If someone or something signals an event, they suggest that the event is happening or likely to happen. 表示

        He seemed to be signalling important shifts in U.S. government policy. 他似乎在表示美國(guó)政府的政策將會(huì)有些重大變化。

      • 5. N-COUNT A signal is a piece of equipment beside a railway, which indicates to train drivers whether they should stop the train or not. 鐵路的信號(hào)燈

        A signal failure contributed to the crash. 信號(hào)燈故障導(dǎo)致了這次撞車事故。

      • 6. N-COUNT A signal is a series of radio waves, light waves, or changes in electrical current which may carry information. (傳輸信息的無(wú)線電、光波或電流) 信號(hào)

        ...high-frequency radio signals. …高頻無(wú)線電信號(hào)。

      • 返回 signal

      劍橋詞典

        signal noun [C] (ACTION)

        an action , movement , or sound that gives information , a message , a warning , or an order
        信號(hào)
        When she gave (them) the signal, they all cheered . 她發(fā)出信號(hào)后,他們都?xì)g呼起來(lái)。
        [ 詞或詞組后面接一個(gè)that從句 ] The fireworks were a signal that the festival had started . 焰火是節(jié)日開始的信號(hào)。
        [ 動(dòng)詞后面接一個(gè)帶to的不定式 ] The police officer gave us the signal to stop . 警察示意我們停下。
        The signal for a race to start is often the firing of a gun . 賽跑常以發(fā)令槍響作為開始的信號(hào)。
        US (UK indicator)
        a turn signal
        (車輛)轉(zhuǎn)向燈(同 turn signal)

        例句
      • At a prearranged signal, everyone started moving forwards .
      • I usually set my watch by the time signal on the radio .
      • At the given signal, the group rushed forward to the barrier .
      • I've been trying to call him all evening , but I keep getting the engaged signal.
      • A whistle is the signal for the children to line up ready to go into the classroom .
      • signal noun [C] (WAVE)

        a series of electrical or radio waves that are sent to a radio or television in order to produce a sound , picture , or message
        (用于傳輸聲音、圖像或其他信息的)電波信號(hào)

        范例
      • The picture quality is bad because the TV signal isn't powerful enough.
      • The equipment sent out a regular high-pitched signal.
      • There is some interference on the signal - do not adjust your set.
      • signal noun [C] (SHOWING)


        something that shows that something else exists or is likely to happen
        跡象
        The loss is a clear signal of his deteriorating confidence . 比賽輸了,這清楚地表明他信心日漸不足。
        The changing colour of the leaves on the trees is a signal that it will soon be autumn . 樹葉顏色的改變表明秋天即將來(lái)臨。

        signal noun [C] (EQUIPMENT)


        equipment , especially on the side of a railway or road , often with lights , that tells drivers to stop , continue , or go more slowly
        (尤指鐵路或公路上的)信號(hào)燈
        a railway signal 鐵路信號(hào)燈
        a traffic signal 交通信號(hào)燈
        a road signal 道路信號(hào)燈 返回 signal
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