English Dictionary

signal

/ˈsɪɡnəl/

verb

(transitive, intransitive) To indicate; to convey or communicate by a signal. / (transitive) To communicate with (a person or system) by a signal.

He signaled for the waiter.

意味（1）

(transitive, intransitive) To indicate; to convey or communicate by a signal.

I signalled my acquiescence with a nod.

意味（2）

(transitive) To communicate with (a person or system) by a signal.

Seeing the flames, he ran to the control room and signalled headquarters.