优化套餐显示逻辑新增多语言

lib/app/localization/app_translations.dart

@@ -749,6 +749,25 @@ class AppTranslationsPurchaseMembership {
 
   /// 确认购买描述
   String get confirmPurchaseDesc => 'purchaseMembership.confirmPurchaseDesc'.tr;
+
+  /// 时间单位：一周
+  String get oneWeek => 'purchaseMembership.timeUnit.oneWeek'.tr;
+
+  /// 时间单位：一个月
+  String get oneMonth => 'purchaseMembership.timeUnit.oneMonth'.tr;
+
+  /// 时间单位：一个季度
+  String get oneQuarter => 'purchaseMembership.timeUnit.oneQuarter'.tr;
+
+  /// 时间单位：半年
+  String get halfYear => 'purchaseMembership.timeUnit.halfYear'.tr;
+
+  /// 时间单位：一年
+  String get oneYear => 'purchaseMembership.timeUnit.oneYear'.tr;
+
+  /// 时间单位：天数
+  String days(int count) =>
+      'purchaseMembership.timeUnit.days'.trParams({'count': count.toString()});
 }
 
 /// 订单状态模块的翻译类