单词:nozzle orientation
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Nice to meet Mr Roger's class first for spelling out today's introduction, I am Carol Aruz, as when you are going with ten minutes' global headlines, we are going to start things off today in Pakistan.That's where a senior AK leader was killed this w
1. An insurgent group has posted this video online and says it shows a US helicopter being shot down in central Iraq, while the clip has not yet been authenticated. Four US copters have gone down in Iraq in recent weeks. 2. President Bush's 2.9 tril
Ocean Storms Can Cause Great Damage 海洋风暴造成了巨大的损失 From VOA Learning English, this is Science in the News. Im Mario Ritter. And Im Caty Weaver. Today we tell about the science of severe ocean storms. Severe storms that develop o
Bird-friendly Bladeless Wind Turbine Mimics Nature Energy created by conventional three-blade wind turbines is cheap, sustainable and pollution-free. But according to current estimates, the devices' fast-moving blades kill up to 300,000 birds annuall
Have you ever daydreamed about traveling through time, perhaps fast forward in the centuries and seeing the distant future? 你曾白日梦过穿越时空吗?或者穿越到几百年之后及看到遥远未来? Well, time travel is possible, and
BEIJING, July 26 (Xinhuanet) -- Hong Kong scientists announced that they had determined the idea of time travel is impossible by proving nothing can travel faster than the speed of light. The finding is contained in a study done by a research team fr