The phrase "a persistent feature" is correct and usable in written English.
It can be used to describe an element or characteristic that consistently appears or remains over time in a particular context.
Example: "The high levels of pollution in the city have become a persistent feature of urban life."
Alternatives: "a constant element" or "a recurring characteristic".
Why are bubbles such a persistent feature of financial history?
Such consultations will be a persistent feature of international commerce for the foreseeable future.
Or is a paucity of smiles a persistent feature of British life?
The chronic weakness of the British pound - a persistent feature of the Fifties - gave him the weapon he needed.
The drive to single out Israel for demonization is, sadly, a persistent feature of campus life in Europe.
But a creeping control of the media has been a persistent feature of Mr. Erdogan's 15 years in power.
"I don't attribute this drought to global warming, but we do see what increased temperatures can do to exacerbate droughts, and if higher temperatures become a more persistent feature in some regions not used to it, then this isn't a good combination," Svoboda said.
Previous research shows that, although suicidal behaviour is a more persistent feature among those with personality disorders, their clinical characteristics at the time of a suicide attempt may not differ from those without personality disorders [ 31].
Sexual relations between recruits and training staff, who saw the female trainees as a sexual challenge, was a "consistent and persistent" feature at Deepcut, according to one review.
But a defining and persistent feature of that struggle has been the continuing violent determination of Khartoum's successive regimes since independence to uphold and maintain their myth of Arab Supremacy, a supremacy that has culturally, economically, and politically privileged Sudan's Arabs or "Arabs" for generations, especially those from the centre – like me.
Moreover, in the early stages of the disease, pain reflects the nociceptive effects of local inflammation and is often a prominent and persistent feature.
