siren
n
1 device that makes a long loud sound as a signal or warning 汽笛; 警报器
an air-raid siren 空袭警报器
a police siren 警察用的警报器
an ambulance/a fire-engine racing along with its sirens wailing 响著警报器急驰而过的救护车[消防车].
2 (in Greek mythology) one of a number of winged women whose songs lured sailors to their destruction (希腊神话中的)塞壬(半鸟半女人的怪物, 常用美妙的歌声引诱航海者触礁毁灭).
3 woman regarded as fascinating and dangerous 妖艳而危险的女人.
No, we didn't fix anything. We thought we might go out, but we said we'd check with each other first. And now I'm telling you I can't manage this Friday. Another time, possibly, but not Friday.