siren

名词 siren:

1. a sea nymph (part woman and part bird) supposed to lure sailors to destruction on the rocks where the nymphs lived
2. a woman who is considered to be dangerously seductive
   同义词：enchantress, temptress, Delilah, femme fatale
3. a warning signal that is a loud wailing sound
4. an acoustic device producing a loud often wailing sound as a signal or warning
5. eellike aquatic North American salamander with small forelimbs and no hind limbs; have permanent external gills

1. The siren went off at noon.
   警笛在正午鸣响
2. He made out of the cabin at once on hearing the siren.
   他一听到汽笛声就立即走出船舱。
3. We all heard the air-raid siren.
   我们都听到了空袭警报器的声音。
4. An ambulance was racing along with its sirens wailing.
   救护车响着警报急驰而过。