Mary had her back to me.

玛丽背对着我。

《牛津词典》

She stood with her back to me as she placed them on the table.

当她把这些东西摆上桌的时候，她背对着我站着。

youdao

Today, I thought I'd surprise my girlfriend with a bear hug. I found her in the hall with her back to me talking to friends.

今天我想给女朋友一个惊喜的大拥抱，四处找找，发现她背对着我在大厅里跟朋友们聊天。

youdao

I told her it was from the magazine. Then Uncle Caesar drove me back to the hotel.

VOA: special.2009.01.17

She turned her back to me so I threw the little metal box across the room.

NEWYORKER: The Pura Principle

With her back to me and one hand over her eyes, she handed me some paper underwear.

BBC: Forms of identification: The editor of JohnnyJet

She walked over to an alcove window, stood with her back to me.

NPR: Excerpt: 'The Garden Angel'