Persistent bad breath may be a sign of periodontal disease, an abscessed tooth, chronic sinusitis, postnasal drip, chronic bronchitis, certain kinds of oesophageal problems, and other health conditions.
"Life's most persistent and urgent question is, 'What are you doing for others'?
"These threats are persistent, they are aggressive, and more and more dangerous and potentially destructive.
A persistent supply glut has weighed on crop prices and reduced opportunities to move cargoes around the world.
While the cities of China have greeted striking speed of development with open arms,they suffer greatly from a persistent and dense haze of pollution and smog.
Chocolate could provide the key to tackling a persistent cough, researchers claim.
At the heart of the issue is a deeply unenlightened but persistent attitude on the part of the government and management that regards selfless dedication to the company shown through long hours at the office as a prime virtue?
But I asked Peter Attia, a medical doctor who practises in New York and southern California, and who also happens to be a cycling enthusiast, his view on the persistent medical concerns about fat.
Noting also persistent reports that smuggling of sugar believed to originate in India or Thailand and brought in across China's long, porous borders with Myanmar and Vietnam was still widespread.
The ILO said the persistent lack of decent jobs in many regions was also one of the drivers of international migration among young people.
When everybody else says, "Enough is enough" and decides to quit and go home, persistent people shake off those failures and keep going.
Dr Manjeet Shehmar, lead author of the guidelines, said many women with persistent symptoms were not receiving the treatment they needed.
The sympotoms may include eye dryness, blurry vision and persistent headache.
Shaun Rein, founder of the Shanghai-based China Market Research Group, says China's internet is "undeniably huge", but adds that there is a persistent perception the numbers may be over-egged.
China is also grappling with persistent capital outflows amid expectations that the currency, the renminbi, could weaken further.
It is not yet clear whether the rapid spread of access will prove more important than the persistent differences in its availability.
In the experiment, Zhijian noticed that winning players tended to stick with their winning strategy, while losers tended to switch to the next strategy in the sequence of rock-paper-scissors, following what he calls "persistent cyclic flows".
In the experiment, Zhijian noticed that winning players tended to stick with their winning strategy, while losers tended to switch to the next strategy in the sequence of rock-paper-scissors, following what he calls "persistent cyclic flows".
Ultimately,we can be persistent in our effort to make love a priority and to keep it alive and well in our lives.
A partial list includes the strong El Ni system that has formed along the Equator, and another unusually persistent zone of warm water that has been sitting off the North American coast, wryly called "the Blob.
