The phrase "explained orally" is correct and can be used in written English.
You can use it to describe something that has been discussed or explained in person rather than in writing. For example, "At the meeting, the project manager explained orally how the team should proceed."
Initial instructions explained orally that users should evaluate only the wall positions, heights, and textures of buildings.
The treatment procedure was explained orally to the subjects.
Participants were provided with an information/recruitment letter and/or the study was explained orally.
Objectives, tests and other details about methodology and interventions were explained orally and in writing.
Study procedures were explained orally to each illiterate prospective subject in the presence of a literate relative.
The purpose of the interview will be explained orally to the participant before arranging interview time and date.
It is a violation of this policy to submit a problem solution that you are unable to explain orally to a member of the course staff.
All subjects provided written informed consent before participating in the study after the study procedures had been fully explained both orally and in written form.
This was explained both orally and in writing in Danish, with interpretation provided as necessary by either professional interpreters or bi-lingual staff/volunteers at the mosque, drop-in centres, or community groups where recruitment took place.
A plain language statement of the research was distributed and it was explained both orally and in the plain language statement that participation was voluntary and the responses were entirely anonymous.
Speaking Explain orally to a partner what a tree needs to survive using the following language features: sentences.
