单词:
单词: 相关文章
An Earth-size planet has been spotted orbiting a nearby star at a distance that would makes it not too hot and not too cold - comfortable enough for life to exist, researchers announced September 29. If confirmed, the exoplanet, named Gliese 581g, wo
And clearly, we are trying to find evidence of ET, and we are trying to do that by looking for a signal, in whats called the electromagnetic spectrum, which is a fancy way of saying the radio dial, at least for us. Let me turn on my radio here, okay,
Lockheed Martin says it's developing a Mach 6 aircraft that would be faster than any other fighter jet. 洛克希德马丁公司日前宣布,该公司正在研发一款速度可达6马赫、比其它所有飞机都快的战斗机。 Called the Hype
每一日你所付出的代价都比前一日高,因为你的生命又消短了一天,所以每一日你都要更积极。今天太宝贵,不应该为酸苦的忧虑和辛涩的悔恨所销蚀,抬
Now, before we get started 现在,在我们开始之前 This is great. You're excited to play. 很好。你们已经等不及了-- before we get started, can I havethe slides back up here really quick, 在我们开始之前,我在上面再放几张投