2. They quitted work when the siren sounded. 汽笛一响，他们就停止工作了。
3. Here and there, the whine of a distant siren pierced the tranquillity. 此时，远方一道尖利的警报声划破了这单调的平静。
英英解释
n.
1. a sea nymph (part woman and part bird) supposed to lure sailors to destruction on the rocks where th
2. a woman who is considered to be dangerously seductive
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 ext
