Flutter 导入 import 'package:english_words/english_words.dart'

import 'package:flutter/material.dart';
import 'package:english_words/english_words.dart'; // 导入的包

void main() => runApp(new MyApp());

class MyApp extends StatelessWidget {
  @override
...

1，在项目根目录下打开 pubspec.yaml 文件，找到如下代码，添加高亮处代码

dependencies:
  flutter:
    sdk: flutter

# The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^0.1.2
english_words: ^3.1.0

2，在 AS 命令行中执行 flutter packages get 即可