How to say this invention was the result of years of patient experiment. in Japanese
1)
このこの(kono) (n) this発明発明(hatsumei) (n,vs) invention/intelligent/clever/ being enlightened/having the meaning of everything become clearはは(ha) (int) indicating a subject/yes/indeed/well/ha!/what?/huh?/sigh数年間数年間(suunenkan) (n) several yearsのの(no) (prt) indicates possessive/nominalizes verbs and adjectives/substitutes for "ga" in subordinate phrases/indicates a confident conclusion/ indicates emotional emphasis/indicates question忍耐忍耐(nintai) (n,vs) endurance/perseverance/patience強い強い(tsuyoi) (adj-i) tough/stiff/hard/inflexible/obstinate/stubborn実験実験(jikken) (n,vs) experimentのの(no) (prt) indicates possessive/nominalizes verbs and adjectives/substitutes for "ga" in subordinate phrases/indicates a confident conclusion/ indicates emotional emphasis/indicates question結果結果(kekka) (n-adv,n-t) result/consequence/outcome/effect/coming to fruition/bearing fruitでで(de) (prt) indicates location of action/at/in/indicates time of action/indicates means of action/cause of effect/by/and then/so/indicates continuing action/ indicates certainty, emphasis, etc.あったあった(atta) (v) had。。(。) Japanese period "."
