Most US donors are Caucasian, amongst whom 45% of people are blood group o.

大多数美国供血者是高加索人，其中的45%是O型血。

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Objective To develop a procedure for batch preparation of universal red blood cells converted from group B to group O and provide universal red blood cells for clinic.

目的建立B→O血型转换红细胞（通用型红细胞）批量制备工艺，为临床提供通用型红细胞制品。

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They called their group, the O.K.Club.

VOA: special.2010.02.28

So I show that here, so in green, you have what's called a carboxcylic acid group, a c o o h, which gets converted by s o c l 2 to a c double bond o c l or an acid chloride.

我在这里用绿色表示，我们所说的羧酸族化合物，碳，氧，氧，氢，它被亚硫酰氯转化为,一个碳氧双键与碳氯单键组成的酰氯。

麻省理工公开课 - 化学原理课程节选

About eight o'clock, Brown called his group.

VOA: special.2009.06.18

While the PC group posted a 8% y-o-y decline, the data center group looked promising with a 6% y-o-y increase.

FORBES: Intel's Earnings Succumb To The PC Market Slowdown

"It's hard enough for people to communicate with each other even when there's no technology involved, " says Burton Group's O'Kelly.

FORBES: The Evolution Of Web Search

Digicel Group Chairman Denis O'Brien said at a groundbreaking event Wednesday that he believes the hotel will help attract more foreign visitors.

FORBES: Denis O'Brien