intermittent signal 基本例句 闪光信号 The flagship flashed a signal to the fleet.旗舰向舰队发出闪光信号。 Leon was supposed to signal us at the proper time by flashing a light in the window, but apparently he fell asleep at the switch.利昂本来应该在适当的时候从窗口给我们发出闪光信号,但他显然没有履行职责。