By measuring the motion of the galaxies in a cluster, astronomers can infer the cluster's mass.通过测量星系在一个星系团内的运动,天文学家们可以推定这个星系团的质量。They turned their telescopes towards other nearby galaxies...他们把望远镜转向附近其他星系。Space fli...
In nine years of living just outside Siena , Aaron Jastrow had never attended a Palio.埃伦·杰斯特罗在锡耶纳近郊住了九年, 却一次也没看过赛马.After having manufactured the rig, the power assembly's parameter of PALIO is acquired accurately. "...
Circumstances dictated that they played a defensive rather than attacking game.比赛形势决定了他们要打防守战而不是进攻战。Like their children, parents are often defensive about their private lives.就像子女一样，父母也常常很注重保护他们的私生活。He smiled, not wantin...