父(ちち) chichiは wa７０ 70歳(さい) saiで deまだ mada大(たい)変(へん) taihen元(げん)気(き) genkiです desu。 My father is still very healthy at 70. Literal Father [topic-は] 70-years-old [at-で] still very well [copula-です]. で marks the age as a circumstance: 'at the age of 70.' まだ ('still') emphasizes that the state of health persists despite the age. 大変 is a formal intensifier meaning 'very.' agefamilyhealth
父(ちち) chichiは wa７０ 70歳(さい) saiで deまだ mada大(たい)変(へん) taihen元(げん)気(き) genkiです desu。 My father is still very healthy at 70. Literal Father [topic-は] 70-years-old [at-で] still very well [copula-です]. で marks the age as a circumstance: 'at the age of 70.' まだ ('still') emphasizes that the state of health persists despite the age. 大変 is a formal intensifier meaning 'very.' agefamilyhealth