alarm
单词辨析：
指突然产生的强烈的害怕或紧张之感，使人无法理智地思考和行动。
No one knows why she fled in panic.
没人知道她为什么惊慌地逃走了。
He got into a panic when he realised that he couldn't meet the deadline.
他发现无法按期完成任务，慌了起来。
指因意识到可能发生的坏事或危险而产生的惊恐或担忧之感。
He turned back in alarm.
他惊慌地转过身。
There is growing alarm at the increase in food contamination.
对于食品污染的增多，人们越来越恐惧。
指非常强烈的震惊或恐惧之感，含有厌恶的意味。
She recoiled with horror when she saw a big snake.
她看到一条大蛇时吓得往后退。
To his horror, he realized there were blood stains on his coat.
他发现外套上沾有血迹，大为惊恐。
强调极度的恐惧，语义最强。
Several bombs went off one after another, and she screamed in terror.
几颗炸弹接二连三地爆炸，她害怕地尖叫起来。
The sound of gun shots struck terror into the children's hearts.
听到枪响，孩子们胆战心惊。
相关例句：
We could not see what had alarmed him.
我们搞不明白是什么使他忧虑不安。
His family raised the alarm when he had not come home by 9pm.
等到晚上9点他还未回家，他的家人便报警了。
The news was greeted with alarm by MPs
得知这个消息，议员们忧心忡忡。
If he set his alarm clock for midnight, it would wake the whole house
如果他把闹钟设在午夜响，那会把全家人都吵醒的。
The noise would have provoked alarm and neighbourly concern
吵闹本会引起担忧和好意的关注。
The alarm spread rapidly.
警报迅速传开。