Most important for me is loyalty to the original. At the same time however, being "too" loyal to the original can produce an awkward translation. In such cases I will sometimes make a change that preserves the spirit of the original.
我覺得最重要的翻譯原則是忠於原文，然而，忠於原文偶而會產生詰屈聱牙的糟糕翻譯品質，遇到這種情況我會保留原文的精神。