She spends more and more time alone in her room.

她一个人待在屋里的时间越来越多。

《牛津词典》

It seems unnatural for a child to spend so much time alone.

一个孩子独自一人待那么长时间似乎有点反常。

《牛津词典》

youdao

In Aceh Province alone,up to one hundred seventy thousand unsuspecting people died in a short time.

VOA: special.2009.03.17

I need some time alone.

我想一个人静一静。

I need 课堂 - SpeakingMax英语口语达人

By the 1830s,1840s, there were over 100 men in Charleston, South Carolina alone, making their livings full-time as slave traders.

到了十九世纪三四十年代,仅仅在南卡罗来纳的查尔斯顿地区,就有超过一百个,专职从事奴隶贸易的奴隶交易商

耶鲁公开课 - 美国内战与重建课程节选

Dr. Patterson, the government's expert, has spent more time alone with Moussaoui than any other doctor.

CNN: Shoe bomber denies role in 9/11 attacks

Not only does it help Mom enjoy herself and her time alone more, it helps us, too.

FORBES: Can new technology save a lonely widow?

Unlike most Americans, the Warlpiri spent virtually no time alone, so they felt boredom as a group.

WSJ: Interesting Fact: There's a Yawning Need for Boring Professors