"mostly unclear" is a valid phrase that can be used in written English.
It can be used to describe something that is mostly unclear, but may have some small areas of clarity. Example: The instructions for assembling the furniture were mostly unclear, with only the last step being clearly explained.
The science is still mostly unclear.
The physiological consequence of this gain-of-function cleavage for apoptosis remains mostly unclear.
The origin of this inflammation is mostly unclear and remains unresolved in diabetes.
Despite all clinical success the exact mechanisms of action of various anti-CD20 antibodies remains mostly unclear.
(Fans' other identities, like race or sexuality, were mostly unclear). The fan podcasters are not celebrities or Lucasfilm employees.
There have been various attempts to rehabilitate degraded mangrove forests, however the success or failure of these is mostly unclear due to a lack of assessment.
The exact role of FXN and its primary cellular functions in sensory neurons and cardiomyocytes – the cell types that are mostly affected in FRDA – remain largely unclear.
However, these works are mostly based on cultured cell models, and the precise roles of EMT in lung cancer metastasis are still largely unclear.
Exceptionally, some useful radiotracers with lower or higher logDoct,pH7.4 values also entered the brain, but mostly for unclear reasons [26].
Benefits of other interventions or the possible superiority of individual exercise, however, mostly remain unclear.
The causes of such disastrous periods mostly remain unclear, but often the result is that the preventive measures are tightened by the orthopedic surgeons, which often causes irritation and resistance from other workers in the hospital.
