(a school teaching mechanical and industrial arts and the applied sciences)
a confrère
専門ガッコのタメだよ。
He is engrossed in his profession.
He is engrossed in his profession.
He is engrossed in his profession.
the act of specializing
He is engrossed in his profession―devoted to his profession.
a chef who specializes in pastry
He is devoted to his profession―enthusiastic in his profession.
{that} field of speciality
He is engrossed in his profession.
to make a special study of―made a specialty of―make a study of―a subject
He is engrossed in his profession.
a female employee who has a professional skill
a skill that a person acquires for pleasure in addition to a principal occupation
He is engrossed in his profession.
The construction is conducted by professionals.