Ruby on rails 3 初始化时集合中缺少翻译

我正在尝试将I18n添加到我的一个模型的集合中。当我初始化服务器/控制台并调用集合时，翻译丢失，但在重新加载应用程序或控制台后，翻译出现

以下是一个例子：

[1] pry(main)> Listing::CONDITIONS
=> [["translation missing: en.activerecord.attributes.listing.conditions.new", 
"new"], ["translation missing: en.activerecord.attributes.listing.conditions.used-new", 
"used-new"], ["translation missing: en.activerecord.attributes.listing.conditions.used-vgood", 
"used-vgood"], ["translation missing: en.activerecord.attributes.listing.conditions.used-good", 
"used-good"], ["translation missing: en.activerecord.attributes.listing.conditions.used-acceptable", 
"used-acceptable"]]
[2] pry(main)> reload!
Reloading...
=> true
[3] pry(main)> Listing::CONDITIONS
=> [["New", "new"],
["Used - Like New", "used-new"],
["Used - Very Good", "used-vgood"],
["Used - Good", "used-good"],
["Used - Acceptable", "used-acceptable"]]

有什么想法吗