单词：be at a premium
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[00:00.00]Chapter 5 Options [00:01.62]第五章期权 [00:03.24]Unit 9 Options(1) [00:05.43]第九单元期权（I） [00:07.63]Words and Expressions: [00:10.14]challenge eliminate adverse [00:16.64]premium confirmation run a risk [00:23.54]Dialogue
金融英语
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Understanding all the genes and molecules involved in human disease is quite a challenge. Thats why scientists study model organisms, like flies and worm
Scientific American(三)月
1. Toyota has announced it will recall more than 400,000 Prius and other hybrid vehicles around the globe to fix brake problems. This recall is the latest in a string of embarrassing safety problems at the world's largest automaker. This recall invol
美联社新闻一分钟2010(二月)
Courier Delivery Becomes Race Against Clock in 'Premium Rush' On any business day, crossing the street in Manhattan is likely to mean a close encounter with a bicycle courier. They speed from one one end of the city to the other with rush deliveries.
VOA标准英语2012年(八月)
Cathy Majtenyi | Nairobi 28 April 2010 In Kenya, small-scale farmers are particularly vulnerable to the vagaries of weather, often losing their entire investment when droughts or floods destroy their crops. Crop insurance is usually too costly for su
VOA标准英语2010年(四)月
Pump Premium Fuel, Eat Gourmet Food at Washington Gas Station WASHINGTON Imagine putting gas in your car and sitting down to a delicious meal - all in the same place. You can do that in Washington, D.C., where a combination gas station and convenienc
VOA常速英语2013年(十一月)