Officials at the White House announced a new space policy focused on managing the increasing number of satellites that companies and governments are launching into space.
at the White House介词短语位于officials名词后作定语修饰officials,focused on…satellites为动词ed形式的短语做后置定语修饰policy,以及最后that从句为定语从句修饰satellites;
本句话主干的谓语动词为announced,主语officials以及宾语a new space policy,其余为修饰成分;
从focused on短语以及that从句相互具有修饰关系,所以理解时应当作一个整体,这样句子较长,可直接顺着理解。
(白宫的)官员们宣布了一项新的太空政策,它专注于管理政府发射到太空站的大量的卫星。