verb🔗Share发出信号，示意。 To indicate; to convey or communicate by a signal."The teacher signalled the start of the test by raising her hand. "老师举起手，示意考试开始。communicationsignalsignChat with AIVocabulary GamePractice Reading
verb🔗Share发信号，示意。 To communicate with (a person or system) by a signal."Seeing the flames, he ran to the control room and signalled headquarters."看到火焰后，他跑到控制室，向总部发信号求救。communicationsignaltechnologyChat with AIVocabulary GamePractice Reading
