The phrase "introduce variety" is grammatically correct and can be used in written English.
It means to add diversity or diversity to something. You can use it to refer to adding diversity to your writing, meals, daily routine, etc. Example: In order to keep the audience engaged, the writer decided to introduce variety in the plot, adding unexpected twists and turns to the story.
But he does try to introduce variety each time.
We spread them, introduce variety into their brief lives and provide them with all they need to replicate and colonise new habitats.
To introduce variety, automakers jumbled up parts among their brands, at a time when there were real distinctions, to create Canadian models that were often given names suggesting the monarchy or Canadian history.
The high utilization and consumption levels of maize in developing countries calls for investigations into new methods of processing to help introduce variety as well as improve the functionality and nutrient quality of maize-based foods.
Once students understand the concept of a sentence, they can learn to use conjunctions such as "but" and "because". Then they can create complex sentences — including those beginning with subordinating conjunctions such as "although" or "despite" — to introduce variety into their writing.
This is not to say that a healthy older person who has been vigorously active every day for years must cut back with advancing age; but such a person might be wise to reduce the intensity of each workout and to introduce variety so that different parts of the body are used on different days.
A farmer waters grass at a research centre that works to regenerate endangered native species and introduce varieties that are better adapted to hotter, drier conditions in Mopti, Mali.
West End Games' roleplaying sourcebooks introduce varieties that include the TIE/fc fire-control support ship, the TIE/gt ground-attack fighter, the TIE/rc reconnaissance vessel, and the TIE scout.
Therefore, the ability to explore functional genes or markers would be beneficial to researchers who are trying to introduce varieties with excellent wilt resistance.
Kahn was a master of the 1920's loft building, introducing variety and expression into an area usually governed by the cheapest product possible.
Without disturbing the fundamental thrust of the musical line, Muti periodically held the tempo back or pushed it ahead, introducing variety into the work's countless repetitions.
