为什么Node.js无法导入模块？错误[ERR_MODULE_NOT_FOUND]

Question

我跑步

node --experimental-modules simpledemo.mjs  

Simple2.mjs（本书Node.js完整参考指南）

var count = 0;
export function next() { return ++count; }
function squared() { return Math.pow(count, 2); }
export function hello() {
  return "Hello, world!";
}

export default function() { return count; }

export const meaning = 42;
export let nocount = -1;
export { squared };

遇到错误

internal/process/esm_loader.js:74
    internalBinding('errors').triggerUncaughtException(
                              ^


  Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/home/mi/pract/simple2.mjs' imported from /home/mi/pract/simpledemo.mjs

树

tree .
.
├── simple2.msj
├── simpledemo.mjs
└── simple.js

0 directories, 3 files

导入行（通过查看以前的SO帖子进行编辑）

import * as simple2 from '/home/mi/pract/simple2.mjs';

节点版本

v14.8.0

如何解决导入问题？