The phrase "a complex and unfamiliar" is correct and usable in written English.
It can be used to describe something that is intricate and not well-known or understood.
Example: "The theory presented in the lecture was a complex and unfamiliar concept for most of the students."
Alternatives: "a complicated and unknown" or "an intricate and alien".
He was not yet too downcast by the failure of the learned world to appreciate the Begriffsschrift, which, after all, discourages the reader by the use of a complex and unfamiliar symbolism to express unfamiliar ideas.
Students have been shown to benefit from organisational, pedagogic and pastoral support during this transition period (Dornan et al. 2005) as self-direction in a complex and unfamiliar environment is difficult.
Care is needed to determine how best to describe the aims of research in a comprehensible fashion, particularly when complex and unfamiliar research methods are involved.
I consider myself to be a somewhat intelligent person, but when someone explains a new concept to me in terms that are overly complex and unfamiliar, I struggle to easily grasp it.
She did not, so, after an hour, almost fainting under the barrage of her overexplicit and relentless sentences, and the need to attend to several things at once (not only what she was saying, which was often complex and unfamiliar, but also her mental processes, the sort of person she was), I finally asked for some coffee.
In contrast, levels of understanding of the complex and unfamiliar topic of genetic research varied considerably amongst staff and participants.
The more novel, complex, and unfamiliar the situations, the more influence such predispositions bear on trusting (or distrusting) behavior.
(Nurse, NZ) But it is also important to note that health information can be both complex and unfamiliar and good communication can take more than one session to ensure the patient builds the required knowledge and skills.
In the present study, inexperience is predicted to play a role for moped riders from age 16 onwards when they can get licensed for riding a moped, and for cyclists from age 12 onwards, when youngsters start commuting to secondary schools which requires negotiating complex and unfamiliar traffic situations (H4).
While never forgetting where we came from, over the course of our careers, we were challenged to adopt broader views, develop new sensitivities, and see a complex world through unfamiliar eyes.
Sixteen drivers navigated a complex, unfamiliar urban route, using visual and verbal instructions representing the distance-to-turn and junction layout information presented by typical satellite navigation systems.
