So, so far I've talked about rules for insects and for fish and for robots, 那么到目前为止，我谈到了昆虫、鱼群还有机器人的各种行为规则， but what about the rules that apply to our own human collective? 但是那些适用于人类集体的规则呢？ And the las
本演讲 President Bush Welcomes Prime Minister Berlusconi of Italy to the White House PRESIDENT BUSH: Buongiorno. (Laughter.) Fellow citizens, distinguished guests, thank you all for being here as we rece
Standing amongst thousands of black-and-white solar panels（太阳能电池板）, President Obama today discussed an exciting new chapter in the quest for clean and renewable energy: a $3.4 billion investment of Re
