The technicalities of a process or activity are the detailed methods used to do it or to carry it out.
双语例句
例：
the technicalities of classroom teaching.
课堂教学的技术性细节。
2.?[C 可数名词] （尤指法律的）技术性细则
A technicality is a point, especially a legal one, that is based on a strict interpretation of the law or of a set of rules but that may seem unimportant compared to a larger issue.
双语例句
例：
The earlier verdict was overturned on a legal technicality.