fix: 修正遗漏的翻译
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@ -830,15 +830,20 @@ figure
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In brief, you must have previously registered a **provider** of the `HeroService` with the injector.
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A provider is something that can create or return a service, typically the service class itself.
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简单点说,我们必须先用注入器(injector)为`HeroService`注册一个**提供商(provider)**。
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提供商用来创建或返回服务,通常就是这个服务类本身(相当于`new HeroService()`)。
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block registering-providers
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:marked
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You can register providers in modules or in components.
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我们可以在模块中或组件中注册提供商。
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In general, add providers to the [root module](#module) so that
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the same instance of a service is available everywhere.
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通常会把提供商添加到[根模块](#module)上,以便在任何地方使用服务的同一个实例。
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但通常会把提供商添加到[根模块](#module)上,以便在任何地方都使用服务的同一个实例。
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+makeExcerpt('src/app/app.module.ts (module providers)', 'providers')
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@ -979,9 +984,7 @@ block registering-providers
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> [**管道**](pipes.html):在模板中使用管道转换成用于显示的值,以增强用户体验。例如,`currency`管道表达式:
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>
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> > `price | currency:'USD':true`
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>
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>> `price | currency:'USD':true`
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> It displays a price of 42.33 as `$42.33`.
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@ -989,6 +992,7 @@ block registering-providers
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> [**Router**](router.html): Navigate from page to page within the client
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application and never leave the browser.
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> [**路由器**](router.html):在应用程序客户端的页面间导航,并且不离开浏览器。
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block angular-feature-testing
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