array(4) {
  ["id"] => string(2) "14"
  ["name"] => string(12) "解决方案"
  ["url"] => string(10) "/solutions"
  ["pid"] => string(1) "0"
}

array(4) {
  ["id"] => string(2) "62"
  ["name"] => string(12) "科学研究"
  ["url"] => string(15) "/solutions?tp=5"
  ["pid"] => string(2) "14"
}

array(4) {
  ["id"] => string(3) "310"
  ["name"] => string(12) "医疗健康"
  ["url"] => string(27) "/solutions/research/medical"
  ["pid"] => string(0) ""
}