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| 詞匯 | signal |
| 釋義 | signal1 /'signal; 'sign)/ n [C] 1 (making of a) movement, (showing of a) light, (sending of a), message, device used, to give a warning, an order or information, esp to sb at a distance; order, warning, etc, conveyed in this way: 信號(hào); 暗號(hào); 打信號(hào)等; 借信號(hào)所發(fā)出的命令，警吿等：'traffic ~s, for cars, etc in the streets; 交通信號(hào); 'hand ~s, made with the hand by the driver of a motorvehicle to show which way it will turn, etc; 汽車駕駛者的手勢(shì) (如表示轉(zhuǎn)彎等); give the ~ for an attack. 發(fā)出進(jìn)攻的信號(hào)。 A red light is usually a ~ of danger. 丘燈通常是危險(xiǎn)的信號(hào)。 A train must not pass a ~ that is at danger. 火車切不可闖危險(xiǎn)號(hào)志。 '~box n building on a railway from which ~s and movements of trains are controlled. 引起一陣歡呼。 3 electronic impulse in radio, TV, etc; sound or TV image, transmitted or received: 訊號(hào); 電臺(tái)、電視發(fā)送或接收之聲音或影像： an area with a poor/excellent TV signal. 影像不清(極隹) 之地區(qū)。 vt, vi (II-. US, -I-) [VP6A, 9, 17, 2A, C] make a ~ or ~s to; send by ~; make use of ~(s): 向…發(fā)信號(hào); 以信號(hào)報(bào)知; 用信號(hào)： ~ a message; 以信號(hào)發(fā)送消息; ~ (f 。) the commanding officer (that...)-, 向指揮官發(fā)信號(hào)(報(bào)吿…); ~ (to) the waiter to bring the menu; 作手勢(shì)要侍者拿菜單; ~ that one is about to turn left. 作手勢(shì)表示將向左轉(zhuǎn)。 Sailors ~ with flags by day and with lights at night. 水手們白日用旗，夜晚用燈, 發(fā)信號(hào) o —ler (US = ~ er) /'signala(r); 'signal1/ n person who ~s, esp a soldier (cf Navy, 參較海童用語， '-—man) specially trained in sending and receiving messages. 信疏員; (尤指)信號(hào)兵。 (鐵路上之) 信號(hào)所。 '~man /-man; -zmaen/ n (pl -men) person who operates ~s on a railway; man who sends and receives ~s (in the army and navy). (鐵路之) 信號(hào)手; (陸海軍之) 信號(hào)兵。 ' ~ gun n one fired as a ~ in case of distress, eg on a wrecked ship. (危難時(shí)，如遭船難，所用之) 信號(hào)槍; 號(hào)炮。 2 event which is the immediate cause of general activity, etc: (”般活動(dòng)等之) 直接原因; 導(dǎo)火線： The arrival of the President was the ~ for an outburst of cheering. 總統(tǒng)的到津 |
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