| 释义 |
DEFINITIVE EXAMPLES 权威例句〔gun〕A discharge of a firearm or cannon as a signal or salute.鸣放：鸣放火器或大炮作为信号或表示敬意美国传统〔hoist〕A group of flags raised together as a signal.作为信号一起扯起的一组旗美国传统〔siren〕A device in which compressed air or steam is driven against a rotating perforated disk to create a loud, often wailing sound as a signal or warning.汽笛：一种装置，其中被压空气或蒸汽冲击一个旋转的有孔圆盘而产生巨大的、常常是尖锐的声音，作为信号或警报美国传统 |