紧密相连
closely connected
  a very close-knit family 关系紧密的家庭 
 a tightly knit community 紧密团结的团体 
 The two communities are closely knit by a common faith. 两个团体因共同的信仰而紧密联合在一起。 
 The company is controlled by a tightly-knit group of investors.
 Divisions have appeared within his usually tight-knit circle of friends.
 See also: knit (JOIN)