alarm 和 clock 都有闹钟的意思,为什么还是用alarm clock 来表达闹钟呢,如Did the alarm clock go off 英语
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【答案】 alarm clock 是一个固定词组,就是闹钟的意思.见下面注解2.
alarm
[ә`lɑrm;ә`lɑ:m]
n.
1.警报; 警报器[C]
The doorkeeper gave the alarm as soon as he saw the smoke.
守门人一看见冒烟就发出警报.
2.闹钟[C] (=alarm clock)
3.惊慌,恐惧,担忧[U]
What's up? he asked in alarm.
出什么事了?他惊恐地问道.