Onlar durdurulamaz görünüyor. - They seem unstoppable.
O şu anda durdurulamaz fakat sorun onun kariyerinin zirvesinde ne kadar kalacağıdır. - He's unstoppable right now but the question is how long he can remain at the pinnacle of his career.
Something that is unstoppable cannot be prevented from continuing or developing. The progress of science is unstoppable. the country's seemingly unstoppable economy. unable to be stopped