sth intended to warn command, or give a message, such as a special sound or action
a sound, image, or message sent by waves, as in radio or television
make a signal or signals; send or express (sth) in this way; communicate with (sb) in this way
"signals from the boat suddenly stopped"
"he awaited the signal to start"
"the victory was a signal for wild celebration"
"the year saw one signal triumph for the Labour party"
"He signed his disapproval with a dismissive hand gesture"
"The diner signaled the waiters to bring the menu"
"These symptoms indicate a serious illness"
"Her behavior points to a severe neurosis"
"The economic indicators signal that the euro is undervalued"
Her sobs..became more subdued..a signal to Dan that she would soon relent.
出自： E. Caldwell
Sterling M3..had given misleading signals.
Signal villains of every class.
出自： John Foster
To have done this at all would be a signal achievement.
出自： K. Tynan
Seeing him enter the room..she signalled him to approach.
出自： P. G. Wodehouse
Threw open the door and signalled the escort captain.
出自： B. Malamud