So, a problem in explaining how children learn language, 所以在解释孩子们如何学习语言时候，有一个问题 a problem in teaching language to adults so that they don't make grammatical errors, 同样也是教成人学外语语法时的一个问题 and a problem in
April 18, 2007 10:32 A.M. EDT THE PRESIDENT: Thank you all. Please be seated. Thank you all very much. I appreciate your hospitality, Mr. Chairman. Thank you very much for the fine job you're doing. I
In early June, President Xi Jinping and President Obama had eight hours of no-necktie meetings in California in which they outlined their vision of China and the United States working together to crea
This week, the United States and our international partners finally achieved something that decades of animosity has not - a deal that will prevent Iran from obtaining a nuclear weapon. This deal will
