any nonverbal action or gesture that encodes a message
any incitement to action
an electric quantity (voltage or current or field strength) whose modulation represents coded information about the source from which it comes
造句
In digital signal technique, a signal that uses a positive(or negative) excursion and ground as the two binary signal states. 在數字信號技術中，用正(或負)向電壓與地兩個電平來表示二進制“1”和“0”的一種信號
A police car drew alongside and signalled to me to stop. 一輛警車開到我身邊示意我停下來。
The defeat signalled the end of the war. 那一次失敗標志著戰爭的結束。
Heavy footsteps signalled the teacher\\\'s approach. 沉重的腳步聲顯示教師已經走近了。
近義反義詞
signal
signal slot
signal type
signal rate
signal bomb
signal plug
signal chip
signal tail
signal scan
signal ball
signal loss