move in【intransitive verb+adverb/preposition,especially among,in】to spend one's time with people of the stated class or type.周旋(于),活動(于),生活(于)；
e.g.a young writer who moves mostly in literaty and artistic circles(=among writers,paiters etc) 大部分時間周旋在文藝界的青年作家.
move in,【phrase verb,intransitive】
1.to take possession of a new home 搬進（新居）
e.g.We've bought the house,but we can't move in until next month.
2.[(on)] to (prepare to) take control,attack etc (準備)控制,奪取,進攻,擠進；
e.g.Our competitors have gone out of business,so now our company can move in.我們的競爭對手已經(jīng)歇業(yè),現(xiàn)在我們的公司可以著手控制市場了.
move into 進入 應該是強調(diào)進入某個特定區(qū)域 一個大范圍里的小范圍