留下了很多马赛赤贫者，年轻男子现在集聚在城镇里卖，一种次珍贵的当地石头，或者寻找低收入的工作比如夜班警卫。

It has left many Maasai destitute, with young men now converging in the towns to hustle tanzanite, a semiprecious local stone, or to seek poor-paying jobs as night guards.

youdao

一种能终结这种苦楚的疫苗代表了该国在医疗保健方面的一次巨大进步。

A vaccine which can halt this suffering represents a quantum leap in healthcare in this country.

《柯林斯英汉双解大词典》

一种类似恐慌的感觉在一次洪水中压倒了我。

Something like panic overtook me in a flood.

《柯林斯英汉双解大词典》

For example, what if you could make a hepatitis vaccine that was good in one shot instead of three shots?

比方说,如果你研制的一种肝炎疫苗,只需接种一次,而不是三次会怎么样

耶鲁公开课 - 生物医学工程探索课程节选

Another sort of task, which is a task that's been done hundreds, perhaps thousands of times, is known as "the false-belief task" and here's the idea.

另一种任务,已经被应用过了成百上千次,叫做"错误信念任务",任务是这样的

耶鲁公开课 - 心理学导论课程节选

These mortgages were given out to people that couldn't afford them and today you have what you call subprime mortgages--subprime paper They issued against this paper stuff called mortgage-backed security. They securitized them and these things are all floating around now.

我们发放这些抵押贷款给那些买不起房子的人,所以现在你们看到了一种你们叫做,次级抵押贷款的金融工具--次贷票据,他们把这种票据叫做,有抵押证券，他们把有抵押证券证券化,这些证券现在在市场上被多次交易，广为流通。

耶鲁公开课 - 金融市场课程节选