home in on something/someone
phrasal verb with home verb uk/həʊm/ us/hoʊm/
informal
瞄准，对准
to aim for
The missile homed in on the ship. 导弹瞄准了那艘船。
集中注意力于
to find and give a lot of attention to something or someone
The report homed in on the weaknesses in the management structure. 这篇报告重点论述了该管理体系的弱点。