adj.满足不了的，止不住的

The thirst for knowledge is an unquenchable fire within the human spirit.
对知识的渴望是人类精神中无法熄灭的热情。
Her insatiable appetite for adventure made life always exciting with her.
她对冒险的不可满足的需求使生活永远充满刺激。
The explorer's unquenchable curiosity led him to discover untouched territories.
探险家永不满足的好奇心驱使他去发现未被触及的土地。
His passion for painting was unquenchable, no matter how many times he tried to retire.
他对绘画的热爱无法抑制，无论他尝试多少次退休。
The unquenchable laughter of children echoes through the playground on a sunny day.
在阳光明媚的日子里，孩子们无尽的笑声在操场上回荡。
An unquenchable thirst for justice drives many lawyers to pursue careers in public service.
对公正的永不满足追求促使许多律师投身公共服务。
His love for books was unquenchable, filling every shelf in his study with a diverse collection.
他对书籍的热爱永不停歇，书房里的每一排书架都堆满了各种各样的藏书。
The篝火在寒冷的夜晚燃烧得如此炽热，仿佛它的火焰是无法熄灭的（unquenchable）。
The campfire burned fiercely through the cold night, as if its flames were unquenchable.
She possessed an unquenchable desire to learn new languages, constantly challenging herself linguistically.
她有一种无法满足的求知欲，不断挑战自己学习新的语言。
His unquenchable optimism was a beacon of hope during their darkest moments.
在他们最黑暗的时刻，他那永不熄灭的乐观如同希望的灯塔。