The greater our knowledge increases, the greater our ignorance unfolds.我们学到的知识越多，认识到的无知就越多。-----肯尼迪In this 1962 speech given at Rice University in Houston, Texas, President John F. Kennedy reaffirmed America&#39s commitment to landing a man on the moon before the end of the 1960s. The President spok

Unit21 An Excerpt of John F. Kennedy Inaugural Address第二十一课 肯尼迪总统就职演说摘录Let every nation know, whether it wishes us well or ill, that we shall pay any price，bear any burden,告知诸国，不论是希望我们好或不好的国家，我们都会不惜任何代价，meet any hardship, support any friend, oppose any foe, to assure the survival and success of libe