学界がっかい (gakkai)

彼かれは 学界がっかいで 高たかく 評価ひょうかされている

He is highly regarded in academic circles.

また昭和40年ごろから医学界に導入された。

Around 1970, Naikan was introduced to the medical world.

今年の文学界は不作だ. This has been a bad year for literary works [the literary world].今年の文学界は不作だ. We've had very few good literary works this year.しかし偽書説は、上代文学界・歴史学界には受け入れられていない。

However, the gisho theory was not accepted by Jodaibungakukai (Association for Early Japanese Literature) or the historical society.

彼は英文学界の大御所である. He's a leading figure in the domain of English literature.その発明は科学界を根底から揺さぶった. The invention rocked [shook] the world of science to its foundation.彼は学界から身を転じてジャーナリストになった. He left the academic world and turned journalist [switched to journalism].彼は医学界に不滅の金字塔をうち建てた. He accomplished a monumental work in the field of medicine.氏は学界のために大いに功労があった. He has done a great deal for [rendered great services to] the cause of learning [science].彼は医学界に多大な影響力を持っている。

He has great influence over the medical world.