translate && del Redundant codes && some new var

plugins/trans.php

@@ -1,5 +1,5 @@
 <?php
-//PluginList("trans", "翻译");
+//PluginList("trans", "translate");
 if (preg_match("/^".TAG."trans (.*)$/", $_GET['text'], $matches)) {
 	$matches = explode(" ", $matches[1], 2);
 	if (!isset($matches[1])) {
@@ -10,7 +10,7 @@ if (preg_match("/^".TAG."trans (.*)$/", $_GET['text'], $matches)) {
 		$text = $matches[1];
 	}
 	$trans = file_get_contents("http://tool.dennx.com/translate/?text=".$text."&to=".$to);
-	$msg = "翻译结果: ".$trans;
+	$msg = "Result: ".$trans;
 	$BOT->exec("msg ".$from." ".escapeString($msg));
 
 }