如何将两个不同的UIPickerView数据添加到单个标签中？

// 创建第一个UIPickerView
let pickerView1 = UIPickerView()
pickerView1.dataSource = self
pickerView1.delegate = self

// 创建第二个UIPickerView
let pickerView2 = UIPickerView()
pickerView2.dataSource = self
pickerView2.delegate = self

// 创建UILabel来显示选择的数据
let label = UILabel()

// 实现UIPickerView的数据源和委托方法
extension ViewController: UIPickerViewDataSource, UIPickerViewDelegate {
    // 返回选择器的分区数
    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }
    
    // 返回选择器的行数
    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        // 返回对应选择器的数据行数
        if pickerView == pickerView1 {
            return data1.count
        } else if pickerView == pickerView2 {
            return data2.count
        }
        
        return 0
    }
    
    // 返回选择器的每一行数据
    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        // 返回对应选择器的数据
        if pickerView == pickerView1 {
            return data1[row]
        } else if pickerView == pickerView2 {
            return data2[row]
        }
        
        return nil
    }
    
    // 处理选择器的选择事件
    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        // 将选择的数据拼接到一个字符串中
        var selectedData = ""
        if pickerView == pickerView1 {
            selectedData += data1[row]
        } else if pickerView == pickerView2 {
            selectedData += data2[row]
        }
        
        // 将拼接好的字符串赋值给标签的text属性
        label.text = selectedData
    }
}

// 将UIPickerView和UILabel添加到视图中
view.addSubview(pickerView1)
view.addSubview(pickerView2)
view.addSubview(label)