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- to sound an air attack 发出防空警报
- The fort can't be defended against an air attack. 这个要塞无法防御来自空中的袭击。
- The fort cannot be defended against an air attack. 这座要塞遭到空袭时无法防御。
- There were a few straws in the wind yesterday which indicated that an air attack was imminent. 昨天就有一些迹象表明会有空袭。
- China’s call was more meant to sound an alarm to the United States. 它的呼吁更多意味在于对美国的一种警告。
- I am sure tha that building will be completely distroy if there is an air attack. 我敢肯定那座楼在空袭中一定被完全炸毁了。
- The siren went off in the middle of the night to warn that there was going to be an air attack. 半夜响起了警报,警告人们将有空袭。
- The ammunition ship Mary Luckenback explodes during an air attack on Arctic Convoy PQ18, September 14, 1942. 1942年9月14日，第18北极护航舰队的弹药运输船“玛丽鲁肯贝克”号在一次空袭中爆炸。
- In case of an air attack, low down and creep quickly to the nearest bomb shelter. 万一遇到空袭，应该迅速趴下并匍匐至最近的防空洞。
- Beyond delivering a description of the invader to the immune system, HSPs seem to sound an alarm as well. 热休克蛋白除了向免疫系统提供侵略者的特徵之外，似乎也同时敲响了警钟。
- The Japanese had launched against the Philippines an air attack that quickly reduced our inadequate air forces to practical impotence. 日本已向菲律宾采取空中攻势，使我们原极薄弱的空军丧失其战斗力。
- A valve mounted Fig. 51 Limit Switch is supplied which sends out a remote signal to sound an alarm, indicating that the valve is closed. 一个安装型号51限制开关的阀门能够发送一个远程信号去显示警报，表示这个阀门被关闭。
- The dark trees lent an air of mystery to the scene. 阴暗的树林给景色带来几分神秘。
- You need a lot of tact to be an air hostess. 当空中小姐言行需十分得体。
- The IDS will become a backup system, rarely forced to sound an alarm that someone has actually gotten past your secure threshold. 而IDS则成为了一个备份系统，因为很少人能入侵系统而激活报警机制。
- He whistled an air very softly to himself. 他自个儿用口哨轻轻地吹著一支曲子。
- The purpose of a story is to sound an alarm, to keep a light trained on The System in order to prevent it from tangling our souls in its web and demeaning them. 故事的目的在于提醒世人，在于检视体制，避免它驯化我们的灵魂、剥夺灵魂的意义。
- Her presence imparted an air of elegance (to the ceremony). 她一出席(给仪式)增添了高雅的气氛。
- Here in Haifa, air sirens continue to sound. 防空警报仍未在海法撤销。
- A bell used to sound an alarm. 警钟用于发出这种警报的钟
