сигнал тревоги 用英语:

Much better to be woken by the birds than by an alarm.

The news caused alarm throughout the village.

He never travels without taking an alarm clock with him.

If there is a big earthquake, the alarm will sound.

They sounded the alarm when they saw the enemy approaching.

She gave a small cry of alarm and fled to the bathroom.

I overslept because my alarm didn't go off.

Tom continued reading the newspaper even though the burglar alarm had gone off.

alarm clock

Don't go onto the crossing when the alarm is ringing.

His roommate would blacken her toast until it set off the fire alarm.

Kate always sleeps through her alarm. Speaking of which, have you seen her yet today?

The clock was working, but the alarm had not gone off.

Christopher Columbus was notorious for repeatedly snoozing his alarm clock by hitting it with his fist. Unfortunately, his "alarm clock" was usually his first mate.

Now, don't be alarmed,