The team examined results from a Norwegian study of more than nine hundred people with C.O.P.D.

VOA: special.2009.06.23

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

The team examined results from a Norwegian study of nine hundred fifty-four people with C.O.P.D.

VOA: special.2009.06.03

The I.O.C.says its efforts are the beginning of a worldwide tsunami-warning program.

VOA: special.2009.03.17

Senator Claire McCaskill described synthetic C.D.O.s during a Senate subcommittee hearing.

VOA: special.2010.04.30

C.O.P.D.is a new name for emphysema and chronic bronchitis.

VOA: special.2009.06.23

Mosaic is spelled m-o-s-a-i-c.

VOA: special.2009.01.02

That's m-a-c-a-r-o-n.

VOA: special.2010.04.12

C-A-T-W-O-M-A-N."

VOA: special.2009.06.07

This is a new company record. If it wasn't a waste of a fine enlisted man, I'd recommend you for O.C.S.,Private Gump.

VOA: standard.other