回答数
3
浏览数
238
喵呜兔几
signal, (gesture, sound) 信号
马铃薯菇凉
信号 [xìn hào] semaphoresignalsigncall letter
ling爱吃
信号 [词典] signal; semaphore; gun; [电影] The Signal; [例句]火车切不可越过危险信号。A train must not pass a signal that is at danger.
优质英语培训问答知识库
