单词：california mastitis test
单词：california mastitis test 相关文章
This is the VOA Special English Agriculture Report. Cows, sheep, goats and other animals can get mastitis, an inflammation in the udder, the organ where milk is produced. Milk from an untreated cow is still relatively safe to drink. But the milk is
VOA慢速英语2008（十）月
She was a big, homely, overweight young woman, in her late 20s, maybe. No ring on her finger, so she was probably single. In fact, judging from her unfriendly demeanor, she probably had no boyfriend. And unless she started dieting and exercising regu
365个英语简短小故事
Now, the VOA Learning English program Words and Their Stories. On this show, we explore the origins and usage of common expressions in American English. During September in the United States and in many places around the world children are going back
2017年VOA慢速英语(九)月
This is Xaero - a vertical take-off and landing vehicle being developed by Masten Space Systems. The California start-up hopes the rocket will eventually carry pay-loads for NASA to altitudes of up to 30 kilometres, mainly to collect atmospheric data
英语新闻视频
LOS ANGELES, Oct. 31 (Xinhua) -- A passenger rocket plane developed by Virgin Galactic's crashed on Friday after suffering an in-flight anomaly during a powered test flight over the U.S. state of California, the commercial company said on Twitter. 新华
英语新闻
WASHINGTON, July 5 (Xinhua) -- The U.S. Department of Defense on Friday announced that the nation's missile defense system failed in a latest test with a ground-based interceptor missile failing to hit an incoming ballistic missile over the Pacific.
英语新闻