Some studies have estimated that up to 30 percent of the care delivered to patients in the United States is unnecessary, and sometimes even harmful.

一些研究报告估计，在美国，患者承担的医疗费用当中有高达30%是非必须的，有时甚至是有害的。

youdao

I wanted to stay at United for my whole career, but sometimes things aren't meant to be.

我希望我的职业生涯都在曼联，但有时天不随人愿。

youdao

Ships cannot head directly from Cuba to the United States, though sometimes extra paperwork can circumvent this.

船只不能直接从古巴开往美国，尽管有些时候，可以利用一些特殊的商贸文件绕开这一点。

youdao

He says in recent years the United States has sometimes failed to live up to that responsibility.

VOA: standard.2009.05.23

So sometimes you can have a team like Manchester United can play against a team

所以，有时你可以看到像曼联队这样的球队会对阵一个球队，

关于足球联赛 - SpeakingMax英语口语达人

If you have unique skills and are interested in traveling to underdeveloped, sometimes dangerous regions, the United Nations Volunteers may have a job for you, sometimes in a country consistently beset with disasters.

CNN: Site Seer: Help others in need, and help yourself

Kagan acknowledges that the United States sometimes has to support authoritarian regimes to further its interests.

NEWYORKER: After America

Television news stories in the following days sometimes showed bulging barrooms across the United States and other times empty ones in tourist destinations.

FORBES: Finding Sanctuary on Nine-Eleven