pigeon's milk

例句：

1. 1. Pigeon's milk is a rare and expensive ingredient in many traditional Chinese medicines.
   鸽子奶是许多传统中药中一种罕见且昂贵的成分。
2. 2. The baby was fed with pigeon's milk, which made him grow up quickly.
   婴儿被喂以鸽子奶，这使得他迅速成长。
3. 3.Pigeon's milk is not suitable for people who are allergic to dairy products.
   鸽子奶不适合对乳制品过敏的人。