updated translations

resources/lang/zh-CN/bills.php

@@ -13,6 +13,7 @@ return [
     'price'                 => '价格',
     'sub_total'             => '小计',
     'discount'              => '折扣',
+    'item_discount'         => 'Line Discount',
     'tax_total'             => '税率',
     'total'                 => '总计',
 
@@ -28,7 +29,9 @@ return [
     'histories'             => '历史记录',
     'payments'              => '付款方式',
     'add_payment'           => '新增付款方式',
+    'mark_paid'             => 'Mark Paid',
     'mark_received'         => '标记已收到',
+    'mark_cancelled'        => 'Mark Cancelled',
     'download_pdf'          => '下载 PDF格式',
     'send_mail'             => '发送邮件',
     'create_bill'           => '创建帐单',
@@ -42,10 +45,13 @@ return [
         'paid'              => '已付款',
         'overdue'           => '已逾期',
         'unpaid'            => '未付款',
+        'cancelled'         => 'Cancelled',
     ],
 
     'messages' => [
-        'received'          => '成功标记账单为已收到！',
+        'marked_received'   => 'Bill marked as received!',
+        'marked_paid'       => 'Bill marked as paid!',
+        'marked_cancelled'  => 'Bill marked as cancelled!',
         'draft'             => '这是 <b>草稿</b> 账单, 在收到后将反映在图表上。',
 
         'status' => [