There are birds that lay unfertilized eggs, but as part of a bigger clutch of eggs are fertilized eggs.

确实有下未受精的蛋，但是是作为更多的受精的蛋的一部分。

He looked down at the clutch of eggs and spotted the gold one, gleaming against its cement-colored fellows, residing safely between the dragon's front legs.

他低头望着那一窝蛋，辨认出了那只金蛋，它在那些安安稳稳躺在火龙前腿中间的石灰色的伙伴中闪闪发亮。