名詞 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
   同義詞：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.
   警笛在正午鳴響
2. He made out of the cabin at once on hearing the siren.
   他一聽到汽笛聲就立即走出船艙。
3. We all heard the air-raid siren.
   我們都聽到了空襲警報器的聲音。
4. An ambulance was racing along with its sirens wailing.
   救護車響著警報急馳而過。