to signal
01
发信号, 示意
to give someone a message, instruction, etc. by making a sound or movement
Transitive: to signal sth
Ditransitive: to signal sb to do sth
例子
The coach signaled the players to execute a specific play using hand gestures.
教练用手势示意球员执行特定的打法。
In a crowded room, she discreetly signaled her friend across the table to join her.
在一个拥挤的房间里，她 discreetly 示意 桌子对面的朋友加入她。
02
信号, 表示
to indicate something as a sign for something else
Transitive: to signal sth | to signal that
例子
The dark clouds in the sky signaled an approaching storm.
天空中的乌云预示着一场即将来临的风暴。
His frequent coughing signaled that he might be coming down with a cold.
他频繁的咳嗽预示着他可能要感冒了。
03
示意, 表达
to do something to make one's feelings or opinions known
Transitive: to signal an opinion or sentiment
例子
She signaled her disapproval by crossing her arms and frowning.
她通过交叉双臂和皱眉来表示她的不赞成。
The protesters signaled their dissent by chanting slogans and holding up signs.
抗议者通过喊口号和举标语表达了他们的异议。
Signal
01
信号, 信号
a series of electrical or radio waves carrying data to a radio, television station, or mobile phone
例子
The satellite transmits a signal to the television station, allowing live broadcasts to be aired.
卫星向电视台传输一个信号，允许直播节目播出。
My mobile phone lost signal in the remote area, making it impossible to make calls.
我的手机在偏远地区丢失了信号，导致无法拨打电话。
02
信号, 手势
a gesture or action used to convey a message without using words
例子
She raised her hand as a signal to get the teacher's attention.
她举起手作为信号以引起老师的注意。
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。
03
any stimulus, warning, or indication that encourages or triggers a specific action
例子
The bell was the signal to begin class.
The red flag served as a signal to stop work.
signal
01
unusually important, remarkable, or outstanding in quality or effect
例子
She made a signal contribution to the research project.
The general achieved a signal victory in the campaign.
词汇树
signaler
signaling
signaller
signal
