pythonfirst
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diff --git a/‎basics/type-assertion_props.js
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@@ -222,7 +222,7 @@ <h3 id="%E5%B0%86-any-%E6%96%AD%E8%A8%80%E4%B8%BA%E4%B8%80%E4%B8%AA%E5%85%B7%E4%
 <p>上面的例子中，我们调用完 <code>getCacheData</code> 之后，立即将它断言为 <code>Cat</code> 类型。这样的话明确了 <code>tom</code> 的类型，后续对 <code>tom</code> 的访问时就有了代码补全，提高了代码的可维护性。</p>
 <h2 id="%E7%B1%BB%E5%9E%8B%E6%96%AD%E8%A8%80%E7%9A%84%E9%99%90%E5%88%B6">类型断言的限制<a class="anchor" href="#%E7%B1%BB%E5%9E%8B%E6%96%AD%E8%A8%80%E7%9A%84%E9%99%90%E5%88%B6">§</a></h2>
 <blockquote>
-<p>本小结的前置知识点：[结构类型系统（TODO）][]、[类型兼容性（TODO）][]</p>
+<p>本小节的前置知识点：[结构类型系统（TODO）][]、[类型兼容性（TODO）][]</p>
 </blockquote>
 <p>从上面的例子中，我们可以总结出：</p>
 <ul>
@@ -422,7 +422,7 @@ <h2 id="%E7%B1%BB%E5%9E%8B%E6%96%AD%E8%A8%80-vs-%E7%B1%BB%E5%9E%8B%E5%A3%B0%E6%9
 <p>所以为了增加代码的质量，我们最好优先使用类型声明，这也比类型断言的 <code>as</code> 语法更加优雅。</p>
 <h2 id="%E7%B1%BB%E5%9E%8B%E6%96%AD%E8%A8%80-vs-%E6%B3%9B%E5%9E%8B">类型断言 vs 泛型<a class="anchor" href="#%E7%B1%BB%E5%9E%8B%E6%96%AD%E8%A8%80-vs-%E6%B3%9B%E5%9E%8B">§</a></h2>
 <blockquote>
-<p>本小结的前置知识点：<a href="../advanced/generics.html">泛型</a></p>
+<p>本小节的前置知识点：<a href="../advanced/generics.html">泛型</a></p>
 </blockquote>
 <p>还是这个例子：</p>
 <pre class="language-ts"><code class="language-ts"><span class="token keyword">function</span> <span class="token function">getCacheData</span><span class="token punctuation">(</span>key<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">)</span><span class="token operator">:</span> <span class="token builtin">any</span> <span class="token punctuation">{</span>