Flutter WidgetsApp路由相关属性注释翻译。MaterialApp, CupertinoApp

/// {@template flutter.widgets.widgetsApp.navigatorKey}
  /// A key to use when building the [Navigator].
  /// 创建[Navigator]时会用到的一个key
  ///
  /// If a [navigatorKey] is specified, the [Navigator] can be directly
  /// manipulated without first obtaining it from a [BuildContext] via
  /// [Navigator.of]: from the [navigatorKey], use the [GlobalKey.currentState]
  /// getter.
  /// 如果[navigatorKey]是已指定的，
  /// 则[Navigator]不需要通过[BuildContext]来首次获取，就可以直接 *** 作
  /// [Navigator.of]：通过[navigatorKey]，使用[GlobalKey.currentState] getter方法
  ///
  /// If this is changed, a new [Navigator] will be created, losing all the
  /// application state in the process; in that case, the [navigatorObservers]
  /// must also be changed, since the previous observers will be attached to the
  /// previous navigator.
  /// 如果navigatorKey被改变，新的[Navigator]将会被创建，所有正在进行的应用状态将会丢失；
  /// 因为前一个[navigatorObservers]关联了前一个navigator，所以[navigatorObservers]也必须被改变。
  ///
  /// The [Navigator] is only built if [onGenerateRoute] is not null; if it is
  /// null, [navigatorKey] must also be null.
  /// 只有[onGenerateRoute]不为空，[Navigator]才会被创建；
  /// 如果[onGenerateRoute]为空，[navigatorKey]一样也必须为空
  ///
  /// {@endtemplate}
  final GlobalKey? navigatorKey;

  /// {@template flutter.widgets.widgetsApp.onGenerateRoute}
  /// The route generator callback used when the app is navigated to a
  /// named route.
  /// 触发于应用导航到一个命名路由时，的路由生成器回调
  ///
  /// If this returns null when building the routes to handle the specified
  /// [initialRoute], then all the routes are discarded and
  /// [Navigator.defaultRouteName] is used instead (`/`). See [initialRoute].
  /// 当创建用于处理具体的[initialRoute]的路由时，若返回空，
  /// 之后所有的路由会被丢弃，同时[Navigator.defaultRouteName]会被使用，而不是(`/`)。
  /// 具体查阅[initialRoute]
  ///
  /// During normal app operation, the [onGenerateRoute] callback will only be
  /// applied to route names pushed by the application, and so should never
  /// return null.
  /// 处于正常的app *** 作时，[onGenerateRoute]回调只会应用于命名路由的push *** 作，
  /// 由此，[onGenerateRoute]不会返回空
  ///
  /// This is used if [routes] does not contain the requested route.
  /// [onGenerateRoute]用于当[routes]不包含【the requested route】时
  ///
  /// The [Navigator] is only built if routes are provided (either via [home],
  /// [routes], [onGenerateRoute], or [onUnknownRoute]); if they are not,
  /// [builder] must not be null.
  /// {@endtemplate}
  /// [Navigator]只会创建当路由提供（或者通过[home]），
  /// [routes]，[onGenerateRoute], or [onUnknownRoute])；
  /// 如果以上未提供，[builder]必须不为空
  ///
  /// If this property is not set, either the [routes] or [home] properties must
  /// be set, and the [pageRouteBuilder] must also be set so that the
  /// default handler will know what routes and [PageRoute]s to build.
  /// 如果这个属性未设置，则[routes] or [home]必须设置，
  /// 并且[pageRouteBuilder]也需要设置
  /// 好让默认处理其知道路由和[PageRoute]s创建
  ///
  final RouteFactory? onGenerateRoute;

  /// {@template flutter.widgets.widgetsApp.onGenerateInitialRoutes}
  /// The routes generator callback used for generating initial routes if
  /// [initialRoute] is provided.
  /// 触发于当[initialRoute]有提供，生成初始路由时的路由生成器回调
  ///
  /// If this property is not set, the underlying
  /// [Navigator.onGenerateInitialRoutes] will default to
  /// [Navigator.defaultGenerateInitialRoutes].
  /// 如果该属性未设置，会默认为[Navigator.defaultGenerateInitialRoutes]
  ///
  /// {@endtemplate}
  ///
  final InitialRouteListFactory? onGenerateInitialRoutes;

  /// The [PageRoute] generator callback used when the app is navigated to a
  /// named route.
  /// [PageRoute]生成器回调，触发于app导航到命名路由
  ///
  /// This callback can be used, for example, to specify that a [MaterialPageRoute]
  /// or a [CupertinoPageRoute] should be used for building page transitions.
  final PageRouteFactory? pageRouteBuilder;

  /// {@template flutter.widgets.widgetsApp.routeInformationParser}
  /// A delegate to parse the route information from the
  /// [routeInformationProvider] into a generic data type to be processed by
  /// the [routerDelegate] at a later stage.
  /// 一个用于解析路由信息（信息来自[routeInformationProvider]）的代理，
  /// 该代理将路由信息解析成范型数据类型，
  /// 以便[routerDelegate]在之后的阶段处理
  ///
  /// This object will be used by the underlying [Router].
  /// 该对象会被潜在的[Router]使用
  ///
  /// The generic type `T` must match the generic type of the [routerDelegate].
  /// 该范型'T'必须匹配[routerDelegate]的范型
  ///
  /// See also:
  ///
  ///  * [Router.routeInformationParser]: which receives this object when this
  ///    widget builds the [Router].
  /// {@endtemplate}
  final RouteInformationParser