Remarks of President Barack ObamaAs Prepared for DeliveryWeekly AddressJuly 10, 2010 Last weekend, on the Fourth of July, Michelle and I welcomed some of our extraordinary military men and women and t
But I want to jump up to shallow water now and look at some creatures that are positively amazing. 不过我现在还是想说说浅水里的世界，来看看那些神奇的生物。 Cephalopods -- head-foots. As a kid I knew them as calamari, mostly. 头足类
