在Flutter中同时显示两种语言吗？

dependencies:
  flutter:
    sdk: flutter

  flutter_localizations:
    sdk: flutter

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'My App',
      supportedLocales: [
        const Locale('en', 'US'), // 英文
        const Locale('zh', 'CN'), // 中文
      ],
      localizationsDelegates: [
        GlobalMaterialLocalizations.delegate,
        GlobalWidgetsLocalizations.delegate,
      ],
      home: MyHomePage(),
    );
  }
}

{
  "title": "My App",
  "greeting": "Hello!",
  "button": "Click Me"
}

{
  "title": "我的应用",
  "greeting": "你好！",
  "button": "点击我"
}

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(Localizations.of(context).arb['title']),
      ),
      body: Center(
        child: Text(Localizations.of(context).arb['greeting']),
      ),
    );
  }
}