常見例句A red light is usually a signal of danger. 紅燈通常是危險(xiǎn)的信號。I stood watching for the signal to change to green. 我站著等待交通信號轉(zhuǎn)爲(wèi)綠燈。Let's set the clock by the radio time signal. 喒們照著收音機(jī)的報(bào)時(shí)信號把鍾對一對。A red lamp is often a danger signal. 紅燈常常是危險(xiǎn)的信號。A reflected signal on a communication channel. 一種在通信信道上反射廻來的信號。The rise in prices was a signal for rebellion. 物價(jià)上漲引起了叛亂。 返回 signalize