Add Chinese translation for Endpoints Slices.

Signed-off-by: Yixiang2019 <[email protected]>

Add Chinese translation for Endpoints Slices.

Signed-off-by: Yixiang2019 <[email protected]>

content/zh/docs/concepts/services-networking/endpoint-slices.md

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+---
+reviewers:
+- freehan
+title: Endpoint Slices
+feature:
+  title: Endpoint Slices
+  description: >
+    Scalable tracking of network endpoints in a Kubernetes cluster.
+
+content_template: templates/concept
+weight: 10
+---
+
+
+{{% capture overview %}}
+
+{{< feature-state for_k8s_version="v1.16" state="alpha" >}}
+
+<!--
+_Endpoint Slices_ provide a simple way to track network endpoints within a
+Kubernetes cluster. They offer a more scalable and extensible alternative to
+Endpoints.
+-->
+_Endpoint Slices_ 提供了一种简单的方法来跟踪 Kubernetes 集群中的网络端点（network endpoints）。它们为 Endpoints 提供了一种可伸缩和可拓展的替代方案。
+
+{{% /capture %}}
+
+{{% capture body %}}
+
+<!--
+## Endpoint Slice resources {#endpointslice-resource}
+
+In Kubernetes, an Endpoint Slice contains references to a set of network
+endpoints. The EndpointSlice controller automatically creates Endpoint Slices
+for a Kubernetes Service when a selector is specified. These Endpoint Slices
+will include references to any Pods that match the Service selector. Endpoint
+Slices group network endpoints together by unique Service and Port combinations.
+
+As an example, here's a sample EndpointSlice resource for the `example`
+Kubernetes Service.
+-->
+## Endpoint Slice 资源 {#endpointslice-resource}
+
+在 Kubernetes 中，`Endpoint Slice`包含对一组网络端点的引用。指定选择器后，EndpointSlice 控制器会自动为 Kubernetes 服务创建 Endpoint Slices。这些 Endpoint Slices 将包含对与服务选择器匹配的所有 Pod 的引用。Endpoint Slices 通过唯一的服务和端口组合将网络端点组织在一起。
+
+例如，这里是 Kubernetes服务 `example` 的示例 EndpointSlice 资源。
+
+```yaml
+apiVersion: discovery.k8s.io/v1alpha1
+kind: EndpointSlice
+metadata:
+  name: example-abc
+  labels:
+    kubernetes.io/service-name: example
+addressType: IP
+ports:
+  - name: http
+    protocol: TCP
+    port: 80
+endpoints:
+  - addresses:
+    - "10.1.2.3"
+    - "2001:db8::1234:5678"
+    conditions:
+      ready: true
+    hostname: pod-1
+    topology:
+      kubernetes.io/hostname: node-1
+      topology.kubernetes.io/zone: us-west2-a
+```
+
+<!--
+By default, Endpoint Slices managed by the EndpointSlice controller will have no
+more than 100 endpoints each. Below this scale, Endpoint Slices should map 1:1
+with Endpoints and Services and have similar performance.
+
+Endpoint Slices can act as the source of truth for kube-proxy when it comes to
+how to route internal traffic. When enabled, they should provide a performance
+improvement for services with large numbers of endpoints.
+
+## Motivation
+
+The Endpoints API has provided a simple and straightforward way of
+tracking network endpoints in Kubernetes. Unfortunately as Kubernetes clusters
+and Services have gotten larger, limitations of that API became more visible.
+Most notably, those included challenges with scaling to larger numbers of
+network endpoints.
+
+Since all network endpoints for a Service were stored in a single Endpoints
+resource, those resources could get quite large. That affected the performance
+of Kubernetes components (notably the master control plane) and resulted in
+significant amounts of network traffic and processing when Endpoints changed.
+Endpoint Slices help you mitigate those issues as well as provide an extensible
+platform for additional features such as topological routing.
+-->
+
+默认情况下，由 EndpointSlice 控制器管理的 Endpoint Slice 将有不超过 100 个 endpoints。低于此比例时，Endpoint Slices 应与 Endpoints 和服务进行 1：1 映射，并具有相似的性能。
+
+当涉及如何路由内部流量时，Endpoint Slices 可以充当 kube-proxy 的真实来源。启用该功能后，在服务的 endpoints 规模庞大时会有可观的性能提升。
+
+## 动机
+
+Endpoints API 提供了一种简单明了的方法在 Kubernetes 中跟踪网络端点。不幸的是，随着 Kubernetes 集群与服务的增长，该 API 的局限性变得更加明显。最值得注意的是，这包含了扩展到更多网络端点的挑战。
+
+由于服务的所有网络端点都存储在单个 Endpoints 资源中，因此这些资源可能会变得很大。这影响了 Kubernetes 组件（尤其是主控制平面）的性能，并在 Endpoints 发生更改时导致大量网络流量和处理。Endpoint Slices 可帮助您缓解这些问题并提供可扩展的
+附加特性（例如拓扑路由）平台。
+
+{{% /capture %}}
+
+{{% capture whatsnext %}}
+
+<!--
+* [Enabling Endpoint Slices](/docs/tasks/administer-cluster/enabling-endpoint-slices)
+* Read [Connecting Applications with Services](/docs/concepts/services-networking/connect-applications-service/)
+-->
+* [启用 Endpoint Slices](/docs/tasks/administer-cluster/enabling-endpoint-slices)
+* 阅读 [Connecting Applications with Services](/docs/concepts/services-networking/connect-applications-service/)
+{{% /capture %}}