n. 警钟( alarm的名词复数 )

v. 警告( alarm的第三人称单数 ); 使惊慌; 使惊恐; 给（门等）安装警报器

n fear resulting from the awareness of danger

n a device that signals the occurrence of some undesirable event

n an automatic signal (usually a sound) warning of danger

n a clock that wakes a sleeper at some preset time

v fill with apprehension or alarm; cause to be unpleasantly surprised

v warn or arouse to a sense of danger or call to a state of preparedness