Weoftenthinkoffuture.Weoftenwondertheworldwillbelikei...
问题详情： Weoftenthinkoffuture.Weoftenwondertheworldwillbelikeinahundredyears’time. Thinkofspace.Perhapsapermanentstationinthemoonwillhavebeensettedup.Perhapspeoplewillbeabletovisitthemoonastouris...