单词：isobutyl nitrites
单词：isobutyl nitrites 相关文章
MARTYS STORY Hi, my name is Marry Fielding and I guess you could say that I am one in a million. In other words, there are not many people like me. You see, I have a muscle disease which makes me very weak, so I can't run or climb stairs as quickly a
高中二年级英语
SCIENCE IN THE NEWS - How Much Exercise Do You Really Need? BOB DOUGHTY: This is the VOA Special English program SCIENCE IN THE NEWS. Im Bob Doughty. SHIRLEY GRIFFITH: And Im Shuirley Griffith. Today, we will tell why exercise is so important. And we
2011年VOA慢速英语(六)月
Daily Exercise Leads to Better Health From VOA Learning English, this is Science in the News. I'm Bob Doughty. And I'm June Simms. Today, we will tell why exercise is so important. And we will tell about some popular ways to get in good shape. Health
2013年VOA慢速英语(六)月
FAITH LAPIDUS: This is the VOA Special English program SCIENCE IN THE NEWS. Im Faith Lapidus. BOB DOUGHTY: And Im Bob Doughty. Today, we will tell about physical exercise. We will tell why exercise is important, and some of the popular ways to get in
2010年VOA慢速英语(六)月
78 非洲睡眠病在撒哈拉沙漠南部国家猖獗蔓延 DATE=8-6-01 TITLE=DEVELOPMENT REPORT - African Sleeping Sickness BYLINE=Nancy Steinbach （Startat 59
科技之光
SCIENCE IN THE NEWS - How Much Exercise Do You Really Need? BOB DOUGHTY: This is the VOA Special English program SCIENCE IN THE NEWS. Im Bob Doughty. SHIRLEY GRIFFITH: And Im Shirley Griffith. Today, we will tell why exercise is so important. And we
2012年VOA慢速英语(七)月