She was still trying to gather her thoughts together when the door opened.

门打开时她还勉强要自己集中精神。

《牛津词典》

He had hardly reseated himself when the door opened.

他刚坐下，房门开了。

youdao

But Cameron just looked up when the door opened and frowned.

可卡默伦只是在门开的那会儿略一抬头，皱了皱眉头。

youdao

She didn't say a word to me when she opened the door, but took me right into her living room.

VOA: special.2009.07.18

How had she ground her teeth, and torn her hair, when she had seen his happy face as he opened the door of the lady!

VOA: special.2009.04.18

We were smoking our pipes and talking when the door of his apartment opened.

VOA: special.2009.12.26

"The cross was upside down outside the door so when I opened the door it fell in, " he said.

BBC: Graffiti on path

He said the robbers knocked on the door of the house and rushed in when his housemate opened the door.

BBC: Royal Holloway student hit with gun during burglary

When the rear door opened, a white blond-haired decoy stepped out -- wearing a silver Michael Jackson glove.

CNN: Commentary: When the white glove waved