When you modify a UM mailbox policy, you can change such settings as PIN policies, message text settings, and dialing restrictions for a single UM-enabled recipient or multiple UM-enabled recipients.是什么意思_When you modify a UM mailbox policy, you can change such settings as PIN policies, message text settings, and dialing restrictions for a single UM-enabled recipient or multiple UM-enabled recipients.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句