It's down to you to check the door.

检查门是否关好是你的事。

《牛津词典》

When you come to a closed door, check it with the back of your hand.

当你走到一扇关着的门前时，用手背检查一下。

youdao

Students are provided with a combination for their room door locks upon check-in.

办理入住时，学生们会得到一串房间门锁密码。

youdao

It is developing smartphone software for a variety of third-party devices, allowing users to boost their home's temperature, unlock their front door and check in on security devices, among other tasks, from a single interface.

BBC: Technology

He locked the car but took the time to check door by door, shaking each one vigorously to make sure that they were all properly closed.

NEWYORKER: Heirs

"We went to the backstage door for a sound check, " McDaniels says.

NPR: RUN DMC Crashes Rock's Hall Of Fame, Again