colour light signal彩: variegated colour光: light; ray信号机: annunciator; semaphore; tele ...日光信号机: geliograph灯光信号机构: light signal head下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:彩光信号机，即可在微信中查询翻译
