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...
The treaty is awaiting ratification.条约正等待批准.The treaty is subject to ratification.此条约经批准后才能生效.Opinion polls indicated a two - thirds majority in favour of ratification of the treaty.民意调查表明2/3的多数票赞成批准这个条约....
Haiti becomes a signatory to the Buenos Aires copyright treaty.1919年,海地成为布宜诺斯艾利斯版权条约的签字国之一.The children " disappeared " with their parents when security forces invaded their home in Buenos Aires.孩子们在安全部队攻击他们布宜诺斯艾利斯的家时随着父...