false alarm
英 [ˌfɔːls əˈlɑːm]
美 [ˌfɔːls əˈlɑːrm]
n. 假警报; 虚惊
牛津词典
noun
- 假警报；虚惊
a warning about a danger that does not happen; a belief that sth bad is going to happen, when it is not- The fire service was called out but it was a false alarm.
消防人员接到报警后出动，但这是假报火警。
- The fire service was called out but it was a false alarm.
柯林斯词典
- N-COUNT 假警报;虚惊
When you think something dangerous is about to happen, but then discover that you were mistaken, you can say that it was afalse alarm.- ..a bomb threat that turned out to be a false alarm.
最终证实是虚惊一场的爆炸恐吓
- ..a bomb threat that turned out to be a false alarm.
英英释义
noun
- a warning that is given about something that fails to occur
双语例句
- Simulation results show the mechanism can detect the DNS attack, it makes good compromise between the detection rate and the false alarm rate.
仿真结果表明，该机制能够有效检测DNS缓存攻击，并实现检测准确率和误警率间的平衡。 - The new family features five integrated technologies that yield high capture rates and low false alarm rates.
新的系列有五个综合技术特征，仍然是高捕捉率和低误报率。 - You think this is another false alarm.
你以为这又是次错误的安排。 - It offers low false alarm rates and nuisance alarm rates without compromising on high probability of detection levels.
它降低了虚假警报率和干扰警报率，但不会降低高概率的探测级别。 - All the air raid warnings, without exception, had been false alarm.
所有空袭预告毫无例外都是虚假警报。 - It is the core problem in laser detection system keeping low false alarm probability while ensure the detection distance.
如何在保证激光探测距离的基础上保持低的探测虚警，一直是激光探测系统的核心问题。 - The rumours of a petrol shortage turned out to be a false alarm.
汽油短缺的谣传原来是一场虚惊。 - A new constant false alarm rate ( CFAR) detector ( CMCAGO-CFAR) based on censored mean and cell averaging is presented in this paper.
文中基于删除平均（CM）方法和单元平均（CA）方法，提出了一种新的恒虚警检测器（CMCAGO-CFAR）。 - He was the victim of a false alarm.
他受了一场虚惊。 - The alarm system went wrong and created a false alarm.
报警系统失灵，引起一场虚惊。