A number of studies have tried and failed to find a benefit, like a recent one that randomly assigned 5, 442 women to take either a placebo or a B-vitamin combo.

大量的试验试图表明它的好处，但都失败了，就像最近的一次研究，5,442名妇女被随机分配服用安慰剂或是维生素b。

youdao

When a user taps on a table view item they are in 9 out of 10 cases expecting the outcome to be: a a right to left view transition or b a bottom to top modal view transition.

举例当用户点击一个表视图Table View的时候，他们永远期待二种结果：a新视图从右向左滑进，b新视图从下向上滑进。

youdao

OK? You can take a quick look at it, a even with the wrong glasses on, it says if a 1 sorry, b is equal to 1, a I'm just going to return a.

你们可以快速的过一遍，它是这么写的：如果,对不起，是b等于，那么就直接返回。

youdao

An A is worth four points, a B three points, a C two points and a D one point.

VOA: special.2009.03.05

a You know that what will happen is that heat will flow from a to b from b to c and from a to c. That's common-sense.

你知道会发生的是热量从流向,从流向,以及从流向。

麻省理工公开课 - 热力学与动力学课程节选

In the case of France again, they are the work of a brilliant military engineer called Vauban, v-a-u-b-a-n.

例如法国,在佩皮尼昂 里尔 蒙梅迪等地方,这样的要塞城镇随处可见

耶鲁公开课 - 欧洲文明课程节选

Berkshire Hathaway A and B shares had a mixed session, a day after hitting record highs.

FORBES: Street Shrugs As Clock Ticks Toward Sequester

So instead, Republicans will fall back upon a Plan B, basically a series of stunts.

CNN: GOP won't deal, health care law won't change

The daily chart shows a flag formation, lines a and b, which is typically a continuation pattern.

FORBES: Get an S&P Edge from Crude Oil