A smoke detector is on the ceiling in your room.

你房间的天花板上有一个烟雾探测器。

youdao

Mother: Doctor, you’ve got help my son. He thinks he’s a smoke detector.

妈妈：医生，你要帮帮我儿子，他认为自己是个烟雾监测器。

youdao

Smoke Detector: Each room and public area is equipped with a smoke detector.

烟感报警器：每间客房及公共区域均设有烟感报警器。

youdao

We recognize that some risks are undertaken willingly ( kiteboarding, using the stairs, forgetting to buy a smoke detector, juggling chainsaws).

FORBES: How About a Budget for Regulations?

In order to get the CO, the house had to pass a town inspection, which it had initially failed due to a wire near the stove, an outlet near the kitchen sink and a battery in the smoke detector in the attic.

FORBES: Buying a First House in the Midst of a Financial Crisis

The electrician I hired, after calling a random name in the phonebook forgot to put the battery in the smoke detector.

FORBES: Buying a First House in the Midst of a Financial Crisis