I have walked through your towns and, while looking, failed to see. 当我经过你们的城镇，观赏时却什么也没看见。 I did notice in Stephenville, Texas, 我在德克萨斯州斯蒂芬威尔市注意到 that the town square was dominated by one lawyer's offic

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

President Obama: Good afternoon, everybody. Yesterday, before votes were tallied, I shot a video that some of you may have seen in which I said to the American people: Regardless of which side you wer

Weekly Address: The American Spirit of Innovation (March 05, 2016) 奥巴马每周电视讲话：总统谈论美国的创新精神 Hi, everybody. One of the things that makes America so strong is our spirit of innovation. Our drive to invent

Many things in this world find neither an answer nor a proper explanation. For example, why should two become a couple among the billions of people on earth? Why don't they love each other even though