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to signal
01
示意, 发信号
to give someone a message, instruction, etc. by making a sound or movement
Transitive: to signal sth
Ditransitive: to signal sb to do sth
Example
The coach signaled the players to execute a specific play using hand gestures.
教练使用手势示意球员执行特定战术。,教练用手势向球员发信号，以执行特定战术。
In a crowded room, she discreetly signaled her friend across the table to join her.
在拥挤的房间里，她低调地示意对面桌子的朋友加入她。
02
信号, 示意
to indicate something as a sign for something else
Transitive: to signal sth | to signal that
Example
The dark clouds in the sky signaled an approaching storm.
天上的乌云示意着一场即将来临的暴风雨。
His frequent coughing signaled that he might be coming down with a cold.
他频繁的咳嗽信号着他可能要感冒了。
03
发出信号, 暗示
to do something to make one's feelings or opinions known
Transitive: to signal an opinion or sentiment
Example
She signaled her disapproval by crossing her arms and frowning.
她交叉双臂并皱起眉头，发出信号表达了她的不满。
The protesters signaled their dissent by chanting slogans and holding up signs.
抗议者发出信号，通过喊口号和举牌表达他们的异议。
Signal
01
信号, 暗示
a gesture or action used to convey a message without using words
Example
She raised her hand as a signal to get the teacher's attention.
她举起手来作为一个暗示，以引起老师的注意。
The referee's whistle served as a signal to stop the game.
裁判的哨声作为停止比赛的信号。
02
信号, 迹象
any incitement to action
03
信号, 信号传输
a series of electrical or radio waves carrying data to a radio, television station, or mobile phone
Example
The satellite transmits a signal to the television station, allowing live broadcasts to be aired.
My mobile phone lost signal in the remote area, making it impossible to make calls.
signal
01
显著的, 引人注目的
notably out of the ordinary
