LANGUAGE_CODE: zh-Hant does not work for some translations on the admin site.

[梁耀文]

I am using LANGUAGE_CODE = 'zh-Hant' and USE_I18N = True on the admin site, but translations for phrases like “start typing to filter…”, “Please correct the errors below.”, “First, enter a username and password. Then, you’ll be able to edit more user options.”, or “Hold down “Control”, or “Command” on a Mac, to select more than one.” do not work properly. However, if I switch to other languages, such as zh-Hans or ja, the translations display correctly (only changing the LANGUAGE_CODE, all other code remains the same).