ES2015“导入”没有在节点v6.0.0中使用-harmony_modules选项。

I am using node v6.0.0 and wanted to use ES2016 (ES6). However I realized that the "import" syntax is not working. Isn't "import" fundamental to for writing modular code in ES2015? I tried running node with I am using node v6.0.0 and wanted to use ES2016