卵黄

例句：

1. 1. The chicken's egg yolk is rich in fat and protein.
   这只鸡的蛋黄富含脂肪和蛋白质。
2. 2. The egg yolk is the yellow part of the egg, which contains nutrients.
   蛋黄是鸡蛋的黄色部分，含有营养物质。
3. 3. Egg yolk is a popular ingredient in many dishes, such as scrambled eggs.
   蛋黄是许多菜肴中常见的成分，如炒蛋。