unquenchable
adj. 止不住的；不能遏制的；不能熄灭的
例句
He had an unquenchable thirst for life.
他有着极其强烈的求生欲。
《牛津词典》
Dust dries your throat, leaving an unquenchable thirst.
沙尘使你喉咙发干，让你感到干渴难忍。
Meanwhile, demand for oil in China and India has become unquenchable.
同时，印度和中国对石油的需求也是无法满足的。
