That budget would end funding for the Constellation program, which would have returned U.S.astronauts to the moon as a stepping stone to Mars.
VOA: standard.2010.04.15
Agricultural villages will have existed all over the place in the late Stone Age, in the Neolithic Period, as it is known. But there is a difference and the critical difference is that a city contains a number of people who do not provide for their own support.
农业村庄在石器时代后期,以及新石器时代随处可见,但二者是有区别的,最重要的区别在于,城市能容纳,相当数量,无需自给自足的人口
"This will serve as a catalyst to help Nigeria to be ready, to improve itself, to look at the organization, to look at the quality of the facilities,and therefore I hope this will serve as a kind of stepping stone for Nigeria to be ready,".
VOA: standard.2009.10.22
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