1
signal to do sth
The referee gave a signal to start the game.
裁判发出了开始比赛的信号。
信号；手势；暗号；预兆
先理解核心含义，再看它在真实句子里的用法。
信号；手势；暗号；预兆
A gesture, sound, or action that conveys information or gives notice of something.
The referee gave a signal to start the game.
裁判发出了开始比赛的信号。
指用动作、声音等传达信息的方式，也可指预示某事发生的迹象。
通信信道中表示编码消息的状态序列
A sequence of states representing an encoded message in a communication channel.
任何传达信息的非语言动作或手势
any nonverbal action or gesture that encodes a message
随时间变化的量或实体状态,检测后传递信息
Any variation of a quantity or change in an entity over time that conveys information upon detection.
任何促使行动的刺激
any incitement to action
She gave me a signal to start the presentation.
她给我打了个手势，示意我开始演示。
AI contextual example
The referee's whistle was the signal for the players to stop.
裁判的哨声是示意球员停下的信号。
AI contextual example
He raised his hand as a signal that he needed help.
他举起手作为需要帮助的信号。
AI contextual example
signals from the boat suddenly stopped
来自船上的信号突然停止了。
WordNet
The referee gave a signal to start the game.
裁判发出了开始比赛的信号。
The sudden drop in temperature is a signal of approaching winter.
气温骤降是冬天临近的信号。
His resignation was a signal that the company was in trouble.
他的辞职是公司陷入困境的信号。
Not this
The traffic sign turned red, so I stopped.
Use this
The traffic signal turned red, so I stopped.
错误：将 'signal' 误用作 'sign'。交通信号灯应用 'traffic signal'，而 'sign' 通常指标志牌或标记。改正后使用正确的名词 'signal'。
Not this
He gave a signal of help when he was in danger.
Use this
He gave a signal for help when he was in danger.
错误：介词搭配错误。表示'求救信号'时，应使用介词 'for'，即 'signal for help'，而非 'of'。改正后使用正确介词。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
发送信号
The device sends a signal to the receiver.
该设备向接收器发送信号。
接收信号
We cannot receive any signal from the satellite.
我们无法接收来自卫星的任何信号。
强信号
A strong signal indicates good connectivity.
强信号表示连接良好。
清晰的信号
Make sure you have a clear signal before making a call.
打电话前确保信号清晰。
做某事的信号
The green light is a signal to go.
绿灯是前进的信号。
某事的信号
Dark clouds are a signal of an approaching storm.
乌云是暴风雨即将来临的信号。
发出信号
The government is sending a signal that it will not tolerate tax evasion.
政府正在发出信号，表示不会容忍逃税行为。
矛盾信号
I'm getting mixed signals from him—he says he likes me but never calls.
我接受到他的矛盾信号——他说喜欢我，但从不打电话。
意图信号
The early election is a clear signal of intent to push through reforms.
提前选举是推动改革意图的明确信号。
信号！烽火点燃了！
In 'The Lord of the Rings: The Return of the King', Pippin cries this as the beacons of Gondor are lit, alerting Rohan to send help.
在《指环王：王者归来》中，皮平喊出这句台词，当时刚铎的烽火被点燃，提醒洛汗国出兵援助。
信号到了。
In 'The Hunger Games', the countdown begins when the signal sounds, marking the start of the games.
在《饥饿游戏》中，信号响起时倒计时开始，标志着游戏正式开始。
Use signal naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
谐音'西格诺'，联想为西方传来的信号。
通信技术, 日常手势, 交通信号
作为名词，signal是可数名词，有复数形式signals。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, OCTANOVE, WIKTIONARY, WORDNET.