signal是什么意思

详细释义

• 0 an action, movement, or sound that gives information, a message, a warning, or an order -- 信號

  • When she gave (them) the signal, they all cheered. 她發出信號後，他們都歡呼起來。

  • [ + that ] The fireworks were a signal that the festival had started. 煙火是節日開始的信號。

  • [ + to infinitive ] The police officer gave us the signal to stop. 員警示意我們停下。

  • The signal for a race to start is often the firing of a gun. 賽跑常以發令槍響作爲開始的信號。

• 1 a series of electrical or radio waves that are sent to a radio or television in order to produce a sound, picture, or message -- （用於傳輸聲音、圖像或其他資訊的）電波信號

• 2 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. 樹葉顔色的改變代表秋天即將來臨。

• 3 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）號誌燈

  • a railway signal 鐵路號誌燈

  • a traffic signal 交通號誌燈

  • a road signal 道路號誌燈

• 4 to make a movement, sound, flash, etc. that gives information or tells people what to do -- 發信號；示意

  • Flashing lights on a parked car usually signal a warning (to other drivers). 停著的車輛上閃爍的車燈通常是警告（其他駕車者）的信號。

  • He signalled left, and turned the lorry slowly. 他打開左轉方向燈，然後將卡車緩慢轉過去。

  • He was signalling (= giving a signal) with a red flag. 他正用紅色旗子發信號。

  • She signalled for help. 她發出了求救信號。

  • [ + that ] She signalled to the cars behind her that they were going the wrong way. 她示意後面的車輛走錯了路。

  • [ + obj + to infinitive ] The children's mother signalled them to be quiet. 孩子們的母親示意他們安靜。

  • [ + to infinitive ] The children's mother signalled to/for them to be quiet. 孩子們的母親向他們示意保持安靜。

• 5 to show that you intend or are ready to do something -- 表達，表示；顯示

  • [ + that ] The union has signalled that the workers will strike. 工會表示工人們將會罷工。

  • The union has signalled the workers' intention to strike. 工會已表示工人們打算罷工。

  • The death of Chairman Mao signalled (= marked) the end of an era in Chinese history. 毛主席的去世標記著中國歷史上一個時代的結束。

• 6 noticeable and unusual -- 顯著的；不尋常的

  • a signal success/failure 重大勝利／失敗