International clinical geneticist Dr Stephen Withers said that the 'black and white' twins happened with a probability of 'two-in-a-million'.

遗传学家斯蒂芬·维特博士表示，这种黑白双胞胎发生的几率只有仅为五十万分之一。

youdao

It's good to be back in civilization after two weeks in a tent!

在帐篷里住了两个星期后又回到人类文明的生活可真好呀！

《牛津词典》

I can use a rough sketch or import an image to query similar images from a bucket of hundreds of disparate images - almost like finding a needle or two in a haystack of images.

我可以使用一个草图或是导入一个图像来从数百个不相干的图像中查询类似的图像—类似于从图像堆中寻找一两个图像。

youdao

The study involved forty-four traders and their profits and losses over a twenty-month period ending in two thousand seven.

VOA: special.2009.02.25

To attend these lectures in sections-- more on that in a moment; to submit 9 problem sets, take two quizzes and ultimately design a final project.

每节课都要来参加-,这个一会儿再解释，做完九套习题，参加两次测验，最后设计好期末的大作业。

哈佛公开课 - 计算机科学课程节选

Here's a candidate--here's an outcome with two entrants in it, an extreme right-wing guy and an extreme left-wing guy.

这是个候选人,有两个加入者,一个极端左派的人和一个极端右派的人

耶鲁公开课 - 博弈论课程节选

The Department for Culture, Media and Sport said the Licensing Act 2003 removed the so-called two-in-a-bar rule, which had allowed two musicians to perform in a pub without needing an entertainment permit, and this was one example of how it "ended up potentially criminalising a harmless cultural pastime".

BBC: Plans to scrap entertainment licences put forward

Australia spent the day preparing in the nets to face their hosts - currently fifth in County Championship Division Two - in a three-day match starting on Friday, with the third Test following on 30 July.

BBC: Lee doubtful for Edgbaston Test

Given that the population has increased by one-and-a-half million in the past 25 years, and two-and-a-half million people in this city were born in other countries, some of which are at war with each other, it is a miracle the place is as peaceful as it is.

ECONOMIST: It��s a London thing