One door had been blocked up.

一扇门被封死了。

《牛津词典》

As you can see from the drawings, the kitchen has one door into the dining room, another into the family room and a third to the outside.

正如你从图纸上看到的，厨房有一扇门通往餐厅，另一扇通往起居室，第三扇通向外面。

youdao

Unexpected results have two benefits: you pretty quickly learn to deal with disappointment, and realize that when one door closes, another opens.

意想不到的结果有两大好处：你可以很快学会处理失望情绪，并认识到当一扇门关闭时，另一扇门会为你敞开。

youdao

If the accused man opened one door, out came a hungry tiger, the fiercest in the land.

VOA: special.2009.04.18

So, what you do is you set up a couple of displays, one where the block is stopped, the other one where you take this away with a trap door and it keeps going.

所以,你可以设计几个演示,一个是木块被挡住了,另一个是用活门把木块挪开,使得屏板继续上升

耶鲁公开课 - 心理学导论课程节选

Sometimes the fierce animal came out of one door.

VOA: special.2009.04.18

He is an optimist and a serious proponent of the "one door closes, another door opens" philosophy.

WSJ: Michael Chiklis | Heavy Opportunities | A Cultural Conversation by Joanne Kaufman

But if you can walk down to the 7-Eleven or a bodega one door over, what's the impact?

WSJ: New York City Soda Restrictions: Ounces of Outrage

The fact that the club only had one door was described by the investigators compiling the report as a "grotesque safety failure".

BBC: Sixteen face charges over Brazil nightclub fire