如何在google-chart linr-graph中显示多行

<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>

google.charts.load('current', {'packages':['corechart']});
google.charts.setOnLoadCallback(drawChart);

function drawChart() {
  var data = new google.visualization.DataTable();
  // 添加数据列
  data.addColumn('string', 'X轴');
  data.addColumn('number', 'Y轴1');
  data.addColumn('number', 'Y轴2');
  // 添加数据行
  data.addRows([
    ['数据点1', 5, 7],
    ['数据点2', 10, 12],
    ['数据点3', 8, 6],
    // 添加更多数据行...
  ]);

  var options = {
    // 配置选项，如图表标题、轴标签等
  };

  var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
  chart.draw(data, options);
}

<div id="chart_div"></div>