You know, in the Middle Ages, in England, when you met a very poor person, that person would be described as an "unfortunate" -- literally, somebody who had not been blessed by fortune, an unfortunate.
And when his audience grew bored, he would spring into the air and do a back flip with a half twist.
当他的观众感到无聊时，他会跳到空中，做一个半扭的后空翻
民主的未来取决于其提供经济增长和社会正义的能力。
我心中的伟大目标是让机器变得如此完美，以至于无需人手的帮助就能完成工作。
"Children see details adults overlook - that's why picture books matter."