WEEKLY ADDRESS: Have a Safe and Happy Fourth of July(July 04, 2015) 奥巴马每周电视讲话：总统祝全国人民国庆节快乐 Happy Fourth of July, everybody.Like many of you, Michelle, Sasha, Malia, and I are going to spend the day ou

As everyone knows,English is very important today.It has been used everywhere in the world.It has become the most common language on Internet and for international trade. If we can speak English well,

And let me ask you, 让我来问问你， when was the last time that you kissed a mirror? 你上一次对着镜子亲吻是什么时候？ Ultimately, we need to work together as communities, as governments and as businesses to really change thi

I think this was synthesized from tractor fuel three days ago So instead, what I implore you to do 我猜 这是三天前用拖拉机燃料合成的 相反 我请你们去做的是 Is believe that if you make courageous choices and bet on yourself 相信只要

This ability to make copies of DNA, as simple as it sounds, has transformed our world. DNA的这种复制能力听起来很简单，却改变了我们的世界。 Scientists use it every day to detect and address disease, to create innovative medic