The phrase "of certain ages" is correct and commonly used in written English.
It is usually used to refer to a specific group of people or things that fall within a certain age range. For example: - The movie is recommended for children of certain ages. - The festival is open to people of certain ages. - The study focused on individuals of certain ages to gather meaningful data.
And these bioinsecticides may work this way for only certain pest species of certain ages.
So if we start categorizing books as appropriate for readers of certain ages, we are running a huge risk of missing wonderful opportunities for discovery and exploration.
And that is the case in New York, particularly New York City, where there are a number of housing-related programs for older residents -- benefits and laws specifically earmarked for those of certain ages.
The NCCN endorses testing for inherited mutations for patients of certain ages and who have a family history of the disease but does not endorse universal testing for breast cancer patients.
Bottega was celebrating 50 years, Maier 15 at its helm, and although I'm linking those models to the notion of the past, there was also the very present satisfaction of seeing real women, of certain ages, wearing these clothes the way they may be sported in reality.
She also had a job during the day, but as war progressed it became more important for people of certain ages to be employed in vital work - so she became a crane driver at, what was then Steel, Peech and Tozer - later to become United Steels and eventually, on nationalisation, BSC.
Some evidence suggests that immunization of certain age groups may also extend indirect protective benefit to vulnerable populations.
The report said the scanners failed to "consistently match individuals of certain age groups or nationalities".
When one looks at equivalent cohorts instead of certain age groups, the difference is clear.
Seto uses the term chronophilia to describe a preferential treatment of certain age categories.
Subjects of certain age categories were underrepresented in the initial urban sample.
