chore(i18n,learn): processed translations (#49642)

curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/basic-javascript/assignment-with-a-returned-value.md

@@ -11,13 +11,13 @@ dashedName: assignment-with-a-returned-value
 
 如果你还记得我们在这一节<a href="/learn/javascript-algorithms-and-data-structures/basic-javascript/storing-values-with-the-assignment-operator" target="_blank" rel="noopener noreferrer nofollow">使用赋值运算符存储值</a>中的讨论，赋值之前，先完成等号右边的操作。 这意味着我们可以获取函数的返回值，并将其赋值给一个变量。
 
-Assume we have defined a function `sum` which adds two numbers together.
+假设我们有一个预先定义的函数 `sum` ，它将两个数相加。
 
 ```js
 ourSum = sum(5, 12);
 ```
 
-Calling the `sum` function with the arguments of `5` and `12` produces a return value of `17`. This return value is assigned to the `ourSum` variable.
+调用 `sum` 函数，参数为 `5` 和 `12`，生成的返回值为 `17`。 将返回值赋给 `ourSum` 变量。
 
 # --instructions--
 

curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/basic-javascript/escape-sequences-in-strings.md

@@ -21,7 +21,7 @@ dashedName: escape-sequences-in-strings
 
 <pre>
 FirstLine
-    \SecondLine
+    \SecondLine
 ThirdLine
 </pre>
 

curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/basic-javascript/replacing-if-else-chains-with-switch.md

@@ -42,61 +42,61 @@ switch (val) {
 
 # --hints--
 
-不要使用 `else` 表达式。
+不要使用 `else` 表达式
 
 ```js
 assert(!/else/g.test(code));
 ```
 
-不要使用 `if` 表达式。
+不要使用 `if` 表达式
 
 ```js
 assert(!/if/g.test(code));
 ```
 
-你应该有至少 4 个 `break` 表达式。
+你应该有至少 4 个 `break` 表达式
 
 ```js
 assert(code.match(/break/g).length >= 4);
 ```
 
-`chainToSwitch("bob")` should return the string `Marley`
+`chainToSwitch("bob")` 应该返回字符串 `Marley`
 
 ```js
 assert(chainToSwitch('bob') === 'Marley');
 ```
 
-`chainToSwitch(42)` should return the string `The Answer`
+`chainToSwitch(42)` 应该返回字符串 `The Answer`
 
 ```js
 assert(chainToSwitch(42) === 'The Answer');
 ```
 
-`chainToSwitch(1)` should return the string `There is no #1`
+`chainToSwitch(1)` 应该返回字符串 `There is no #1`
 
 ```js
 assert(chainToSwitch(1) === 'There is no #1');
 ```
 
-`chainToSwitch(99)` should return the string `Missed me by this much!`
+`chainToSwitch(99)`应该返回字符串 `Missed me by this much!`
 
 ```js
 assert(chainToSwitch(99) === 'Missed me by this much!');
 ```
 
-`chainToSwitch(7)` should return the string `Ate Nine`
+`chainToSwitch(7)` 应该返回字符串 `Ate Nine`
 
 ```js
 assert(chainToSwitch(7) === 'Ate Nine');
 ```
 
-`chainToSwitch("John")` should return `""` (empty string)
+`chainToSwitch("John")` 应该返回 `""`（空字符串）
 
 ```js
 assert(chainToSwitch('John') === '');
 ```
 
-`chainToSwitch(156)` should return `""` (empty string)
+`chainToSwitch(156)` 应该返回 `""`（空字符串）
 
 ```js
 assert(chainToSwitch(156) === '');