When next morning the king saw the thread, all of pure gold, he was mightily pleased.

第二天早上，国王看到了纯金的纺线，心情大好。

I'm wondering if you can see a common thread between these stories.

我想知道你是否可以看到这些故事之间的共同点。

Louisa, holding her hand, could feel no pulse; but kissing it, could see a slight thin thread of life in fluttering motion.

路易莎握着她的手， 感觉不到脉搏； 但是亲吻它， 可以看到一丝微细的生命线在飘动。