So this one is a quadcopter. 这是一个四轴飞行器。 It's a small model helicopter. In a way, it's a toy, no? 一个小型的直升机模型。差不多是个玩具吧。 And so this one was military technology a few years ago, and now it's open-source,
I want to congratulate all the athletes here today for making the 2010 U.S. Olympic and Paralympic（残奥会） Teams – you are truly the best of the best. All of us are incredibly proud of everything y
So, think of the three settings I've talked to you about: 那么想想这3个我所谈到的背景： factory, migration, office. 工厂，移民，办公室。 But it could be in a school, it could be an administration, 但这也可能在学校，在政府， it could
My Fellow Americans, We're only 11 weeks in, but already my administration has achieved historic progress for the American people – in fact, 93% of our domestic manufacturers have expressed optimism i
