-----------------------------------
そこで， 其処で
1. so, accordingly, now, then, thereupon, therefore
tbd
-----------------------------------
登場， とうじょう
1. entrance (on the stage), appearance (in a book, film, etc.)
2. appearance (on the scene), arrival (on the market), emergence, introduction, advent
出场，登台、登场（在舞台上），亮相（在书籍、电影等作品中）；登场（亮相）、上市（进入市场）、出现、推出、问世