在一些国家，鱼翅汤被认为是一种奢侈的菜肴。

In some countries, ___shark-fin soup is considered a luxurious dish.

这把椅子的背部采用了鲨鱼鳍造型设计，既时尚又符合人体工学。

The chair features a ___shark-fin shaped backrest that's both stylish and ergonomic.