a warning device consisting of a horn that generates a loud low tone
a loud low warning signal that can be heard by fogbound ships 同义词：fogsignal,
A foghorn or fog signal or fog bell is a device that uses sound to warn vehicles of hazards or boats of the presence of other vehicles in foggy conditions. The term is most often used in relation to marine transport.
例句与用法
1.
The ship ' s foghorn boomed out 船上的浓雾信号角发出呜呜声。
2.
The foghorn boomed out its warning 雾号轰隆隆地发出警告。
3.
Add some sounds for particular slides , such as a foghorn , tugboat whistle , and the sound of waves lapping on the docks 在个别的幻灯片上添加声音效果，例如浓雾信号、轮船汽笛和波浪冲击码头的声音。
4.
And deepmoved all , simon trumping compassion from foghorn nose , all laughing , they brought him forth , ben dollard , in right good cheer 西蒙从他那宛如雾中警号筒的鼻子里哼出表示共鸣的声音，人们朗笑着，把情绪极高的本多拉德簇拥过来。
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