President Obama welcomes members of Congress to the White House as he and the First Lady host the annual White House Congressional picnic. 【Transcript】 Hello, everybody! (Applause.) Well, how’s the fo
The planet became an intense emitter of radio waves -- the total output from all TV and cell phones and radar transmissions. 地球开始发射出强烈的电磁波 - 其来源是所有的电视，手机和雷达信号传输。 And something else happened. Metallic
Secondly: a lot of writers talk about Uber and Airbnb and TaskRabbit and Lyft and so on as part of the sharing economy. 第二点：很多写手谈论起Uber，Airbnb，TaskRabbit，Lyft等企业时，把他们当做了共享经济的一部分。 This is a very powerf
