警铃

rú guǒ yù dào huǒ jǐng jí àn jǐng líng

如果遇到火警，即按警铃。

In case of fire, ring the alarm bell.

cì ěr de jǐng líng shēng ràng tā cóng chuáng shang yī yuè ér qǐ

刺耳的警铃声让他从床上一跃而起。

The jar of the alarm made him leap out of bed.

tiān cì liáng jī yī gè diàn yuán zhèng hǎo àn xiǎng le jǐng líng

天赐良机，一个店员正好按响了警铃。

It gave an assistant just the chance she needed to push the alarm signal.