It took him a few weeks to settle down in his new neighborhood.

settle 的意思是"安顿、定居"，指在一个地方稳定下来。 down 在这里是副词，表示"安定、稳定"的状态。 settle down 是一个短语动词，意思是"安顿下来、安定下来"，通常指在新环境中适应并建立稳定的生活。