燕窝

例句：

1. 1. The yunfu is a traditional Chinese delicacy that has been enjoyed for centuries.
   燕窝是一种传统的中国美食，已经有几百年的历史了。
2. 2. Yunfu is often used as a health tonic in traditional Chinese medicine.
   燕窝在传统中医中常被用作保健补品。
3. 3. In recent years, more and more people have started to appreciate the nutritional value of yunfu.
   近年来，越来越多的人开始欣赏燕窝的营养价值。