别名

例句：

1. 1. She has a nickname for her pet dog.
   她给宠物狗起了个昵称。
2. 2. The term "African" is often used as an adjective or noun in this context.
   在这个语境中，“非洲的”一词通常用作形容词或名词。
3. 3. His real name was never revealed, but he was known by his friends as "the black sheep."
   他的真实姓名从未被公开，但他的朋友们叫他“黑羊”。