penglai mountain的用法和样例：
例句
- The fabled fairyland of Penglai is, according to ancient legends, one of the three fairy mountains in the oceans.
古代传说中的蓬莱仙境，是海上三座神山之一。 - Like the well-being of the Penglai fairyland, you do not know where it is, it must be stubborn to believe it exists.
幸福就像那蓬莱的仙境，你不知道它在哪儿，却又必须固执地相信着它存在。
