elusive

The snow leopard is an elusive animal that is rarely seen in the wild.

(Chinese) 雪豹是一种难以捉摸的动物，在野外很少见到。

Success remained elusive for the young artist despite her constant hard work.

(Chinese) 尽管这位年轻艺术家一直在努力，但成功对他来说依然遥不可及。