alarm

1.[u]惊恐；惊慌；恐慌fear and anxiety that sb feels when sth dangerous or unpleasant might happen

2.[c][ususing]警报a loud noise or a signal that warns people of danger or of a problem

3.[c]警报器a device that warns people of a particular danger

alarm bells ring/start ringing

警钟敲响；发出危险信号if you say thatalarm bells are ringing , you mean that people are starting to feel worried and suspicious

1.~ sb使惊恐；使害怕；使担心to make sb anxious or afraid

1.警报,急报

2.警报器,警铃

3.惊慌,恐慌

1.吓,惊动;使放心不下

2.向...告急,向...报警,警戒

1.a piece of electrical equipment that warns you of danger, especially by making a loud noise

2.an alarm clock

3.fear or worry that something unpleasant or dangerous might happen

1.to make someone frightened or worried that something unpleasant or dangerous might happen

2.to attach an alarm to something