There are lots and lots of ways of measuring time, 在许多计量时间的方法中 but a really bizarre base 60 system 古怪的60进制制度 known as hours and minutes and seconds is nearly universal around the world. 也就是时分秒计量单位，几乎被

有关外星人的英语演讲稿 　　Do you like aliens? You maybe say yes. However, I don't want to see them! Then let me tell you the reason for that. 　　Actually, there're many on our Earth. However there are few people c

Now, that doesn’t mean testing is going to go away; there will be testing. But the point is, is that we need to refine how we’re assessing progress so that we can have accountability witho

In the long history of the world, only a few generations have been granted the role of defending freedom in its hour of maximum danger. 在世界的悠久历史中，只有很少几个世代的人赋有这种在自由遭遇最大危机时保卫自由的任务。 I do not shrink from

President Obama: Thank you! Hello, Howard! H-U! Audience: You know! President Obama: H-U! Audience: You know! President Obama: Thank you so much, everybody. Please, please, have a seat. Oh, I feel imp