The door was locked from the inside.

门从里面锁上了。

《牛津词典》

Firefighters had to break the door down to reach the people trapped inside.

消防队员不得不破门而入，解救困在里面的人。

《牛津词典》

He unlocked the door of apartment two and disappeared inside after a backward glance at Larry.

他打开2号公寓的门锁，向后瞥了拉里一眼之后走进去就不见了。

《柯林斯英汉双解大词典》

Jim stopped inside the door, as immovable as a dog smelling a bird.

VOA: special.2010.12.25

Opening the closet door, he flung her inside."

VOA: special.2009.08.24

She noticed the big inside door was unlocked, though Castro wasn't home, the police report said.

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Some of the inside door and dash panels can be swapped out by dealers to change the look of the interior.

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One report cites the victims as saying the "big inside door" of the home was usually locked when Mr Castro went out.

BBC: Cleveland rescue: The mystery of 2207 Seymour Avenue