报警

fā shēng huǒ zāi yīng jí shí bào jǐng

发生火灾应及时报警。

Whenever a fire takes place, You should report it to the police immediately.

bào jǐng zhī hòu nǐ zuò le shén me

报警之后，你做了什么？

After you'd called the police, what did you do?

tā de wēi xié xià de tā men bù gǎn qù bào jǐng le

他的威胁吓得他们不敢去报警了。

His threat scared them out of telling the police.

bào jǐng xì tǒng

报警系统

warning system

bào jǐng xiǎn shì

报警显示

alarm display

xiōng bù téng tòng kě néng jiù shì xīn zàng bìng de bào jǐng xìn hào

胸部疼痛可能就是心脏病的报警信号。

Chest pains can be a warning signal of heart problems.