warning signal英 [ˈwɔːnɪŋ ˈsɪɡnəl]美 [ˈwɔːrnɪŋ ˈsɪɡnəl]警告信号,警告标志计算机英英释义nounan automatic signal (usually a sound) warning of dangerSynonym:alarmalertalarum双语例句