7 files changed, 21 insertions, 12 deletions

diff --git a/javascript.html.markdown b/javascript.html.markdown
index 76017c17..c59a90c3 100644
--- a/javascript.html.markdown
+++ b/javascript.html.markdown
@@ -7,7 +7,7 @@ filename: javascript.js
 ---
 
 JavaScript was created by Netscape's Brendan Eich in 1995. It was originally
-intended as a simpler scripting language for websites, complimenting the use of
+intended as a simpler scripting language for websites, complementing the use of
 Java for more complex web applications, but its tight integration with Web pages
 and built-in support in browsers has caused it to become far more common than
 Java in web frontends.
diff --git a/json.html.markdown b/json.html.markdown
index 6d06ffe4..9041eaa2 100644
--- a/json.html.markdown
+++ b/json.html.markdown
@@ -53,6 +53,6 @@ going to be 100% valid JSON. Luckily, it kind of speaks for itself.
   , "another comment": "how nice"
   },
 
-  "that was short": "And, you're done. You know know everything JSON has to offer."
+  "that was short": "And, you're done. You now know everything JSON has to offer."
 }
 ```
diff --git a/markdown.html.markdown b/markdown.html.markdown
index 606840d3..9a863bac 100644
--- a/markdown.html.markdown
+++ b/markdown.html.markdown
@@ -59,7 +59,7 @@ Github, we also have: -->
 <!-- Paragraphs are a one or multiple adjacent lines of text separated by one or
 multiple blank lines. -->
 
-This is a paragraph. I'm tryping in a paragraph isn't this fun?
+This is a paragraph. I'm typing in a paragraph isn't this fun?
 
 Now I'm in paragraph 2.
 I'm still in paragraph 2 too!
diff --git a/perl.html.markdown b/perl.html.markdown
index da2e0cdf..aac95939 100644
--- a/perl.html.markdown
+++ b/perl.html.markdown
@@ -28,7 +28,8 @@ Perl 5 runs on over 100 platforms from portables to mainframes and is suitable f
 my $animal = "camel";
 my $answer = 42;
 
-# Scalar values can be strings, integers or floating point numbers, and Perl will automatically convert between them as required.
+# Scalar values can be strings, integers or floating point numbers, and
+# Perl will automatically convert between them as required.
 
 ## Arrays
 #  An array represents a list of values:
@@ -49,9 +50,11 @@ my %fruit_color = (
         apple  => "red",
         banana => "yellow",
         );
-# Scalars, arrays and hashes are documented more fully in perldata. (perldoc perldata).
+# Scalars, arrays and hashes are documented more fully in perldata.
+# (perldoc perldata).
 
-# More complex data types can be constructed using references, which allow you to build lists and hashes within lists and hashes.
+# More complex data types can be constructed using references, which allow you
+# to build lists and hashes within lists and hashes.
 
 #### Conditional and looping constructs
 
@@ -92,7 +95,9 @@ foreach (@array) {
 
 #### Regular expressions
 
-# Perl's regular expression support is both broad and deep, and is the subject of lengthy documentation in perlrequick, perlretut, and elsewhere.  However, in short:
+# Perl's regular expression support is both broad and deep, and is the subject
+# of lengthy documentation in perlrequick, perlretut, and elsewhere.
+# However, in short:
 
 # Simple matching
 if (/foo/)       { ... }  # true if $_ contains "foo"
@@ -112,8 +117,9 @@ open(my $in,  "<",  "input.txt")  or die "Can't open input.txt: $!";
 open(my $out, ">",  "output.txt") or die "Can't open output.txt: $!";
 open(my $log, ">>", "my.log")     or die "Can't open my.log: $!";
 
-# You can read from an open filehandle using the "<>" operator.  In scalar context it reads a single line from
-# the filehandle, and in list context it reads the whole file in, assigning each line to an element of the list:
+# You can read from an open filehandle using the "<>" operator.  In scalar
+# context it reads a single line from the filehandle, and in list context it
+# reads the whole file in, assigning each line to an element of the list:
 
 my $line  = <$in>;
 my @lines = <$in>;
diff --git a/python3.html.markdown b/python3.html.markdown
index 77811535..778076f8 100644
--- a/python3.html.markdown
+++ b/python3.html.markdown
@@ -238,7 +238,10 @@ empty_set = set()
 # Initialize a set with a bunch of values. Yeah, it looks a bit like a dict. Sorry.
 some_set = {1, 1, 2, 2, 3, 4}   # some_set is now {1, 2, 3, 4}
 
-# Add more items to a set
+#Can set new variables to a set
+filled_set = some_set
+
+# Add one more item to the set 
 filled_set.add(5)   # filled_set is now {1, 2, 3, 4, 5}
 
 # Do set intersection with &
diff --git a/zh-cn/json-cn.html.markdown b/zh-cn/json-cn.html.markdown
index 75966595..3a8db2cf 100644
--- a/zh-cn/json-cn.html.markdown
+++ b/zh-cn/json-cn.html.markdown
@@ -46,6 +46,6 @@ lang: zh-cn
     ]
   ],
 
-  "that was short": "And, you're done. You know know everything JSON has to offer."
+  "that was short": "And, you're done. You now know everything JSON has to offer."
 }
 ```
diff --git a/zh-cn/scala-cn.html.markdown b/zh-cn/scala-cn.html.markdown
index 24f73bb5..28af8ddc 100644
--- a/zh-cn/scala-cn.html.markdown
+++ b/zh-cn/scala-cn.html.markdown
@@ -369,7 +369,7 @@ import scala.collection.immutable._
 import scala.collection.immutable.{List, Map}
 
 // 使用 '=>' 来重命名一个 import
-import scala.collection.immutable{ List => ImmutableList }
+import scala.collection.immutable.{ List => ImmutableList }
 
 // import 除了一些类的其它所有的类。下面的例子除去了 Map 类和 Set 类：
 import scala.collection.immutable.{Map => _, Set => _, _}