20-03-04 在旧金山的一间办公室里，如果你把咖啡杯扔进机器人垃圾箱里，它就会自动把杯子分到可回收垃圾里。 At an office in San Francisco, if you drop a coffee cup in a robotic waste bin, the machine will automatically sort the cup for recycling. The office is one...