单词:
单词: 相关文章
Lesson 27: [00:03.58]Let's Do an Experiment! [00:07.24]One Experiment,Two Theories [00:11.81]A theory is an idea.A theory predicts what will happen. [00:18.57]An experiment shows what happens. [00:23.25]BRIAN:Did you read about this experiment,Danny?
AUDIE CORNISH, HOST: And now a moment to remember Martin Landau, who also died this weekend at the age of 89. He was an Oscar-winning actor in his own right and guided younger stars. NPR's Andrew Limbong has more. ANDREW LIMBONG, BYLINE: Movie stars
For a long time the Big Bang theory had one gaping hole that troubled a lot of peoplenamely that it couldn't begin to explain how we got here. Although 98 percent of all the matter that exists was created with the Big Bang, that matter consisted excl
GWEN IFILL: Earlier in the day, the Obama administration went to Capitol Hill to make its case to allow government great access to encrypted information. Essentially, the government wants to be able to read certain data that intelligence agencies can
Over the lights of sunset and vine We're floating away From the fortune and fame And your lips are mine They're raspberry wine Your body's a map I will follow into the sky Cause what you got Is all that I want It's all that I want And still that's no
The Heat Is On 热传递,是热从温度高的物体传到温度低的物体,或者从物体的高温部分传到低温部分的过程。热传递是自然界普遍存在的一种自然现象。只要物体之间或同一物体的不同部分之间