diff --git a/lib/redmine/activity/fetcher.rb b/lib/redmine/activity/fetcher.rb
index b3f473893..c4adc6adb 100644
--- a/lib/redmine/activity/fetcher.rb
+++ b/lib/redmine/activity/fetcher.rb
@@ -77,9 +77,12 @@ module Redmine
         @scope = Redmine::Activity.default_event_types
       end
 
+      # Time 2015-01-27 16:31:58
+      # Author lizanle
+      # Description 用from to 更加浅显易懂
       # Returns an array of events for the given date range
       # sorted in reverse chronological order
-      def events(days = nil, created_time = nil, options={})
+      def events(from = nil, to = nil, options={})
         e = []
         @options[:limit] = options[:limit]
         # modify by nwb
@@ -87,7 +90,7 @@ module Redmine
 
         @scope.each do |event_type|
           constantized_providers(event_type).each do |provider|
-            e += provider.find_events(event_type, @user, days, created_time, @options)
+            e += provider.find_events(event_type, @user, from, to, @options)
           end
         end