監視網: surveillance network

関与: taking part in / 干与: being concerned with

関与: take part in / 干与: be concerned with

巻頭: opening page of book; beginning of an essay; prefatory / 敢闘: fighting bravely / 完投: going the whole distance; pitching a whole game / 官等: official rank / 竿頭: top of a pole

関東: Kanto / 間島

(electronics) triode (vacuum tube)

conversion, exchange

illegitimacy (being born out of wedlock)

a privately-owned ricefield, especially one under the historical 律令 (Ritsuryō) system

Kyūjitai form of 私鉄 (“private railway”)