[ti:Top Tech 2019: Quantum Computing, Facebook’s Libra, Internet Inventor’s Warning] [by:www.51voa.com] [00:00.00]更多听力请访问51VOA.COM [00:00.04]During 2019, we covered some big developments involving computer and device technology. [00:09.16]We also reported on growing opposition to facial recognition systems [00:15.44]and warnings by the inventor of the World Wide Web about the internet's future. [00:23.48]Google announced it had completed successful experiments [00:28.12]that led to a major development in quantum computing technology. [00:35.24]In one test, the team said its quantum computer processor [00:40.32]was able to complete a complex mathematical problem in just 200 seconds. [00:48.76]The scientists said the same problem would have taken the world's fastest supercomputer 10,000 years to finish. [00:59.88]The researchers described the new progress as "quantum supremacy." [01:06.16]This term describes a point at which a quantum computer can perform a calculation [01:13.24]that a traditional computer could never complete within its lifetime. [01:20.12]Israeli researchers reported they had built the world's first 3D-printed heart using a patient's own cells. [01:30.40]The scientists said the small "printed" heart was the first-ever 3D printed heart [01:37.52]created to include both tissue and blood vessels. [01:42.56]The team expressed excitement at the progress made, but said much more research is needed [01:50.64]to come up with a fully working 3D-printed human heart that can effectively pump blood. [01:59.60]South Korea's Hyundai Motor Group announced the launch of its first vehicle with a solar top, or roof, charging system. [02:11.20]The new system became available for Hyundai's new Sonata Hybrid model. [02:18.00]The vehicle has a structure of solar equipment on top of the car to capture energy from the sun to help charge the battery. [02:28.80]Facebook announced the launch of its own cryptocurrency in a major new push into the worldwide financial services industry. [02:39.36]The U.S.-based social media company said its digital currency, [02:44.56]called Libra, could become available publicly in the first half of 2020. [02:52.40]Facebook said Libra will be available to anyone with a smartphone and internet connection. [02:59.40]The company said the service is designed to make moving money around the world just as easy as sending a text message. [03:11.68]Several American companies announced new delivery services involving drone aircraft. [03:19.60]CVS Health Corporation is partnering with international shipping company UPS [03:25.60]to bring drugs and other products directly to people's home by drone. [03:32.24]Other companies also said they also plan to carry out major drone delivery tests or launch new services in 2020. [03:43.20]San Francisco became the first major U.S. city to ban facial recognition technology [03:50.36]by local law enforcement and all other city agencies. [03:55.80]The ban was part of a bill that restricts surveillance technologies. [04:02.28]The measure also ordered San Francisco agencies to describe any current or future facial recognition activities. [04:12.72]The man credited with inventing the World Wide Web called for major changes to make the internet better for humanity. [04:23.80]Tim Berners-Lee first proposed the internet system 30 years ago. [04:31.16]Berners-Lee spoke several times during 2019 about the current state of the internet, [04:38.08]now used by about half the world's population. [04:43.60]In an open letter, Berners-Lee said the web had clearly created great opportunities for humanity [04:51.72]to progress and made life easier for millions of people. [04:58.00]It also gave groups traditionally not heard a new voice in society. [05:03.92]However, he added that the web had also provided new ways for "scammers" [05:10.84]to carry out crimes and "given a voice to those who spread hatred." [05:17.92]I'm Bryan Lynn. 更多听力请访问51VOA.COM