The phrase "under challenging" is not correct or usable in written English.
It is not a complete sentence or phrase that would make sense in a sentence. Instead, you could use the phrase "facing challenges" or "experiencing challenges" to convey a similar meaning. Example: The team was under a lot of pressure, but they managed to overcome the challenging project.
For Cameron's handlers, facing polls showing that two-thirds of the electorate once again regard the Conservatives as the party of the rich, this was more bad news in a week already filed under challenging.
Under challenging postwar conditions — the first winter, the building had no heating — he began dealing with the freight cars full of books, written in dozens of languages, that arrived daily from Nazi caches.
Resilient organizations are those able to undertake and maintain positive adjustment under challenging conditions (Cheng 2007; Van Gorder 2013).
We described the methodology that enabled us to create a tailored solution for container monitoring with specific requirements under challenging conditions.
Fish oil can be substituted with gelatinised carbohydrate under challenging high water temperatures in brook trout feeds, with no detriment to health, nutrient digestibility or growth performance.
The Vancouver Police and Vancouver Fire Department are doing an exceptional job under challenging circumstances to maintain control of the situation and keep people safe, and emergency crews are working tirelessly to assist those who were injured".
At times, Guardiola must have felt like the gifted child stuck in the wrong, under-challenging class.
Second, all items on the ABS-10 are correlated to general boredom in under-challenging situations.
We found that the ratio in the over-challenging item set was higher than one in the under-challenging situation for all persons in the comparison.
Specifically, over-challenging situations lead learners to either "task-focused" or "self-focused" boredom, while under-challenging situations lead to general boredom.
On the other hand, the alpha value of all items was higher than task- and self-focused boredom in under-challenging situations.
