In 1942, Congress passed the United States Flag Code, creating official standards for how we treat our beloved flag. 1942年，国会通过了"美国国旗法"，法案制定了官方标准，指导我们如何对待珍视的国旗。 From this code, we teach each new Ameri

And the farther you are away in distance, 你距离爆炸点的距离越远越好 the longer it is in time from the initial blast; 距离爆炸的时间越长越好 and the more separation between you and the outside atmosphere, the better. 尽可能地将自己

Take a look at this drawing. Can you tell what it is? 请看这幅图。大家知道这是什么吗？ I'm a molecular biologist by training, and I've seen a lot of these kinds of drawings. 我是一个接受过训练的分子生物学家，因此我已经看过了很多这类图片。 They're u

Wow! Let me just take it in. First of all, it is beyond a pleasure and an honor to be here to celebrate the City College of New York Class of 2016! You all, I mean, this has been the most fun I think

4. Gettysburg Address 4. 林肯葛底斯堡演讲 Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in Liberty, and dedicated to the proposition that all men are crea