My Fellow Americans, this week, I signed the National Defense Authorization Act – a historic step forward to rebuild our military. 我的美国同胞们，本周，我签署了国家国防授权法案——重建美国军队的一个历史性步骤。 Now, it is critical for Cong

The reason that Vibrio fischeri is doing that comes from the biology. 费氏弧菌的发光现象来自生物学上的原因。 Again, another plug for the animals in the ocean, Vibrio fischeri lives in this squid. 接下来，我们再来看一个海洋生物：费式弧菌寄生在

Hi, everybody. On the first day of my administration, I promised to restore science to its rightful place. I told you we would unleash American innovation and technology to tackle the health challenge

We sign, and there's all this hype leading up to our next record. 签约之后，公司举办了大量的宣传活动为我们的新唱片造势。 It comes out and it sells about 25,000 copies in the first few weeks, and the label considers this a failu

And the fact is, that the Affordable Care Act has done more to rein in rising costs, make sure everyone can buy insurance, and attack the federal deficit than we’ve seen in years. And that&rsquo