I went a few years ago to a conference, and on Friday of the three-day conference, 几年前我去参加一个学术会议，连开三天，第一天是周五 one of the participants took me aside, and she said, 一个与会者把我叫到一边，她说 "I suffer from dep
PRESIDENT OBAMA: Good morning, everybody. It is my privilege to welcome you to Washington and to formally convene our fourth Nuclear Security Summit. I convened our first summit – six years ago, in th
And in doing so, we were breeding them for parasitism. 为了做到这点，人类用喂养的方式来让它们寄生于我们。 We were giving them all sorts of reasons to adapt new ways. 我们给了动物们适应新环境的各种理由。 So, for example, rats are incredibly res
In his press conference last night, the President explained why he is committed to the change in course on the nation’s priorities that his budget represents. In response to a question about the
