编写一段vue2嵌套路由的代码

好的，以下是嵌套路由的Vue2代码示例：

import Vue from 'vue'
import Router from 'vue-router'

import Home from '@/components/Home'
import About from '@/components/About'
import Contact from '@/components/Contact'
import Services from '@/components/Services'
import ServiceDetail from '@/components/ServiceDetail'

Vue.use(Router)

export default new Router({
  routes: [
    {
      path: '/',
      name: 'Home',
      component: Home
    },
    {
      path: '/about',
      name: 'About',
      component: About
    },
    {
      path: '/contact',
      name: 'Contact',
      component: Contact
    },
    {
      path: '/services',
      name: 'Services',
      component: Services,
      children: [
        {
          path: ':id',
          name: 'ServiceDetail',
          component: ServiceDetail
        }
      ]
    }
  ]
})

这段代码定义了四个路由：Home、About、Contact和Services。Services路由下还有一个子路由ServiceDetail，用于显示服务详情。