yolk

蛋黄，卵黄英释nnthe yellow part in the centre of an egg

1 egg yolk,蛋黄

2 yolk sac,（等于yolk bag）卵黄囊

3 yolk sac tumor,卵黄囊瘤；卵巢内胚层窦瘤

1 Only the yolk contains cholesterol..只有蛋黄含胆固醇。