Usage patterns
〈物〉業界the ... industry
He works in the IT industry.
業界に入るto enter an industry (start working in it)
After graduating from college, he entered the publishing industry.
業界の動向trends in the industry
This article analyzes trends in the industry.
〈人〉は業界に詳しいto be knowledgeable about an industry
He knows this industry well.