| 释义 |
[/ˈsɪgnəl; ˋsɪɡnl/] n 用法:
1 sign, gesture, sound, etc that conveys a message, command, etc （传递信息、 命令等的）信号, 手势, 声音, 暗号:
a signal made with a red flag 用红旗打出的信号 *
hand signals, ie made by the driver of a car, etc to show which way it will turn, etc 手势信号（司机指示转弯等的） *
She flashed the torch as a signal. 她用手电筒发信号. *
He raised his arm as a signal for us to stop. 他抬起手臂示意我们停下. *
A red light is usually a signal for/of danger. 红灯通常是危险的信号. 用法:
2 any device or object placed to give people a warning, information, etc （给人警告、 信息等的）信号器或信号物:
traffic signals, ie for cars, etc in the streets 交通信号 *
The railway signal (ie light) was on red, so the train stopped. 铁路红灯亮了, 所以火车停下了. 用法:
3 (a) any event or action that causes some general activity 触发某些普遍活动的事情或行动:
The President's arrival was the signal for an outburst of cheering. 总统来到爆发一阵欢呼声.
(b) anything indicating that sth exists or is likely to happen 表明某事物存在或可能发生的任何事物:
Her speech yesterday was a signal that her views have changed. 她昨天的讲话标志著她的观点已经转变. *
Is this announcement the signal of better times ahead? 宣布的这件事是否预示往後日子越过越好了? 用法:
4 sequence of electronic impulses or radio waves transmitted or received （电子脉冲或无线电波的）信号:
receive a signal from a satellite 接收到卫星信号 *
an area with a poor/good TV signal 电视信号弱[强]的地区 *
[attrib 作定语] signal strength 信号强度. signal 2
v (-ll-; US -l-) [I, Ipr, Tn, Tn.pr, Tf, Tw, Dn.pr, Dn.f, Dpr.f, Dn.w, Dpr.w, Dn.t, Dpr.t no passive 不用於被动语态] ~ (to sb/sth) (for sth) make a signal or signals; send or express (sth) in this way; communicate with (sb) in this way 发信号; 用信号传达（某信息）; 用信号与（某人）通讯:
He seems to be signalling. 他似乎正在发送信号. *
signal wildly with one's arms 奋力挥臂打信号 *
signal a message (to sb) 用信号（向某人）传递消息 *
(fig 比喻) signal one's discontent by refusing to vote 拒绝投票以示不满 *
(fig 比喻) an event signalling a change in public opinion 说明公众舆论变化的事件 *
signal that one is going to turn/which way one is going to turn 打信号示意要转弯[走哪条路] *
signal (to) the commanding officer (that...) 向指挥官发信号（报告...） *
signal to the regiment for the attack to begin 向团部发出开始进攻的信号 *
signal (to) sb which way to go 示意某人走哪条路 *
signal (to) the waiter to bring the menu 示意要服务员把菜单拿来. signal 3
[/ˈsɪgnəl; ˋsɪɡnl/] adj [attrib 作定语] remarkably good or bad; outstanding （好或坏）显著的; 出色的:
a signal victory, success, failure, etc 极大的胜利、 成功、 失败等. |