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Sentence

彼かれは古こ代だい史しに通つう達たつしている。

Span Details

古こ代だい史し

ancient history

noun

direction, time, indirect object, or target marker

通つう達たつ

being well versed in; being proficient in

noun, suru verb

light/support verb with a noun or noun-like phrase

-> するgrammar

be; exist; stay; be ...-ing; have ...-ed; be ...-ed

ichidan verb, auxiliary