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enthusiastic
nesshin
meaning: is enthusiastic
部長ぶちょう、ゴルフには熱心ねっしんだね。
buchou, gorufu ni wa nesshin da ne.
The section head is really keen when it comes to golf. casual
学生がくせいたちは今日きょうの実験じっけんに熱心ねっしんでした。
gakuseitachi wa kyou no jikken ni nesshin deshita.
The students were enthusiastic about today's experiment. neutral
nesshinenthusiastic; earnestな