society
siren
/ˈsaɪrən/
释义与例句
n.
1
a loud device typically used on emergency vehicles to alert others of their approach and to clear the way in traffic
警笛, 声音警报装置
I heard a siren outside.
我听到外面有汽笛声。
The fire alarm siren went off.
火警警报响了
记忆技巧
with the siren on → 开着警报
siren goes off → 警报响起