警报器

wǒ men néng yǐn yuē tīng dào yuǎn chù jǐng bào qì de xiào shēng

我们能隐约听到远处警报器的啸声。

We could just hear the distant wail of a siren.

xiāng yān de yān wù yī bān bù huì chù fā yān wù jǐng bào qì

香烟的烟雾一般不会触发烟雾警报器。

Smoke from a cigarette will not normally set off a smoke alarm.

jǐng bào qì de shēng yīn zǒng shì hěn jiān lì

警报器的声音总是很尖利。

The pitch of a siren is usually sharp.