释义
n. 警报,惊慌,警告,报警器 v. 使...惊慌,警告
例句
1. I gave the alarm as soon as I saw the smoke. 我一看见冒烟，就发出了警报。 2. The news of the radiation leak caused widespread public alarm. 辐射泄露的消息引起了公众的普遍恐慌。