element的form表单中如何一行显示多el-form-item标签

    <script src="//unpkg.com/vue/dist/vue.js"></script>
    <script src="//unpkg.com/element-ui@2.4.3/lib/index.js"></script>
    <div id="app">
        <el-form ref="form" :model="form" label-width="80px">
            <el-row>
                <el-col :span="8">
                    <el-form-item label="活动名称">
                        <el-input v-model="form.name"></el-input>
                    </el-form-item>
                </el-col>
                <el-col :span="8">
                    <el-form-item label="活动区域">
                        <el-select v-model="form.region" placeholder="请选择活动区域">
                            <el-option label="区域一" value="shanghai"></el-option>
                            <el-option label="区域二" value="beijing"></el-option>
                        </el-select>
                    </el-form-item>
                </el-col>
                <el-col :span="8">
                    <el-form-item label="活动名称1">
                        <el-input v-model="form.name1"></el-input>
                    </el-form-item>
                </el-col>
            </el-row>
            <el-row>
                <el-col :span="8">
                    <el-form-item label="活动名称2">
                        <el-input v-model="form.name2"></el-input>
                    </el-form-item>
                </el-col>
                <el-col :span="8">
                    <el-form-item label="活动区域2">
                        <el-select v-model="form.region2" placeholder="请选择活动区域">
                            <el-option label="区域一" value="shanghai"></el-option>
                            <el-option label="区域二" value="beijing"></el-option>
                        </el-select>
                    </el-form-item>
                </el-col>
                <el-col :span="8">
                    <el-form-item label="活动名称3">
                        <el-input v-model="form.name3"></el-input>
                    </el-form-item>
                </el-col>
            </el-row>
        </el-form>
    </div>

var Main = {
    data() {
      return {
        form: {
          name: '',
          region: '',
          name2: '',
          name3: '',
          region2: '',
        }
      }
    },
    methods: {
      onSubmit() {
        console.log('submit!');
      }
    }
  }
var Ctor = Vue.extend(Main)
new Ctor().$mount('#app')