An air-raid alarm sounded in the depths of night. 深夜響起了空襲警報。
I raised the alarm as soon as I saw the smoke. 我一看見(jiàn)冒煙就發(fā)出警報。
Expert regard it as a warning signal of an economic smashup. 專(zhuān)家們把它看作是一場(chǎng)經(jīng)濟災難的警告信號。
By smacking his tail fiat on the top of the water he can also make a loud warning signal when enemies are spotted. 當發(fā)現有敵人時(shí)，它可以靠拍擊平放在水面上的尾巴來(lái)發(fā)出響亮的警告信號。
So they had bypassed the warning signal. 因此他們沒(méi)有讓警報信號系統起作用。
Acoustic, optical alarm signals and identifying ind. 船舶聲光報警信號和識別標志。
Alternative warning arrangements must be made if the noise from the work is likely to mask existing alarm signals. 如果作業(yè)產(chǎn)生的噪音可能淹沒(méi)發(fā)出的報警信號時(shí)，則必須采取另外的報警措施。
