“蛋黄”的英语表达是 yolk 。它通常指鸡蛋、鸭蛋等禽类蛋内部的黄色部分。例如:
Beat the egg yolks until they are pale.(把蛋黄打至颜色变浅。)
The recipe calls for separating the egg whites from the yolks.(这个食谱要求把蛋清和蛋黄分开。)