Russia,Czech Republic,Slovakia and Latvia in Group B, and Sweden,Finland, Belarus and Germany in Group C.

VOA: standard.2010.01.12

And one thing I want to tell you to start out with is something about this c h 3 group here.

有一点需要告诉大家的是,从这个一个碳原子和三个氢原子的组合开始。

麻省理工公开课 - 化学原理课程节选

You'll notice that a lot of different kinds medications do you have chlorine in them, you'll see that c l group.

你会注意到很多不同类型的药物都含有氯,你会看到这类氯。

麻省理工公开课 - 化学原理课程节选

In nineteen eighty-five, the group's members expressed their displeasure in the song,"MTV C Get off the Air."

VOA: special.2011.08.05

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

More information about adobe can be ordered from EnterpriseWorks/VITA, an anti-poverty group in Washington, D.C.

VOA: special.2009.01.12

Any time you see a c h 3, this means a methyl group.

一旦你看到一个，C，H，3，的组合，这就意味着一个甲基。

麻省理工公开课 - 化学原理课程节选

He was among a group of medical experts who met in Washington,D.C., earlier this month.

VOA: special.2009.10.26

In nineteen seventeen, she was part of a group that went to Washington,D.C.

VOA: special.2010.03.28

They are known as vitamins A, the B group,C,D,E and K.

VOA: special.2009.04.21

Stuart Levy,a co-founder of Olive Branch D.C., a Washington-based interfaith group bringing together young professional Jews and Muslims.

VOA: standard.2009.10.19

B.C.Street is a group of seven pavilions representing 82 communities throughout British Colombia.

VOA: standard.2010.02.23