This is the 3734th most frequent Chinese word.
資深
Experienced; senior.
The word '資深' is used to describe someone with a wealth of experience or knowledge in a specific field, in this case, a mathematics teacher.
李教授是一位資深的數學教師。
Professor Li is an experienced mathematics teacher.
Here, '資深' indicates the engineers' substantial qualifications and expertise necessary to lead a technical team.
公司聘請了幾位資深的工程師來領導研發團隊。
The company hired several senior engineers to lead the R&D team.
In this sentence, '資深' highlights the journalist's extensive experience and profound understanding in the domain of international politics.