How to say they felt weary after their hard work. in Japanese
1)
熱心熱心(nesshin) (adj-na,n) zeal/enthusiasmにに(ni) (prt) indicates such things as location of person or thing, location of short-term action, etc.勉強勉強(benkyou) (n,vs) study/diligence/discount/reductionしてして(shite) (prt) by/as/indicates patient of a causative expression/acts as a connective/adds emphasis/and then彼ら彼ら(karera) (n,adj-no) those/theyはは(ha) (int) indicating a subject/yes/indeed/well/ha!/what?/huh?/sigh疲れ疲れ(tsukare) (n) tiredness/fatigueをを(wo) (prt) indicates direct object of action/indicates subject of causative expression/indicates an area traversed/indicates time over which action takes place/indicates point of departure or separation of action/indicates object of desire, like, hate,感じ感じ(kanji) (n) feeling/sense/impressionたた(ta) (aux-v) indicate past completed or action/indicates light imperative。。(。) Japanese period "."
