uncinus

例句：

1. 1. The ancient city of Rome is a fascinating place to visit.
   罗马古城是一个令人着迷的地方。
2. 2. The uncinus is a rare and endangered species.
   无核熊是一种稀有且濒危的物种。
3. 3. The uncinus is known for its unique black and white fur.
   无核熊以其独特的黑白毛皮而闻名。