First lady of the United States of America 美利坚合众国第一夫人 Mrs. Michelle Obama 米歇尔.奥巴马夫人 Oh, my goodness 哦 我的天啊 Good morning 早上好 I am so happy to be here with you all 我很高兴同大家一起聚到这里 I'm proud to be here
Let me tell you a story. It's about a woman called Justine Sacco. 这里给各位说个故事。一位名叫贾丝婷·萨科的女士的故事。 She was a PR woman from New York with 170 Twitter followers, 她住纽约，从事公关工作，有170 位推特粉丝， and she'd Tweet littl
Thank you, Helen Clark, Administrator of UNDP, for moderating this very important meeting. I would like to thank the Presidents of the affected African countries – the President of Guinea, the Preside
Here are some images of clusters of galaxies. 这是一些星团的照片。 They're exactly what they sound like. 正如听上去一样。 They are these huge collections of galaxies, 它们是一堆星系， bound together by their mutual gravity
