重要な案件だから慎重に

N3 重要 juuyou important, essential, significant N3 案 an plan, proposal, idea N3 件 ken case, matter, item, issue N4 だから dakara therefore, so, that is why N3 慎重 shinchou careful, prudent, cautious

N4 重 juu, chou / e, omo.i, omo.ri, omo.nau, kasa.neru, kasa.naru, omo heavy, important, esteem N3 要 you / i.ru, kaname need, main point, essence N1 案 an / tsukue plan, suggestion, draft N3 件 ken / kudan affair, case, matter N1 慎 shin / tsutsushi.mu, tsutsu.mashii, tsutsushi, tsutsushi.mi humility, be careful, discreet

N5 〜から kara Indicates cause or reason, equivalent to because or since, connects two clauses explaining reason N5 〜に ni Indicates destination, target, arrival point, specific time, or person receiving an action N5 〜か ka Marks a question, alternative, or uncertainty, appears at the sentence end or between options