Do you know how this fish has become one of our soul food and no longer an unusual sight at our dinner tables?
Do you know the process of this fish becoming our national food and a usual sight at our dinner tables?
(訳1)
Do you knowで「知ってる?」、
how this fish has become「どの様にこの魚が成ったのか」、
one of our soul food「私達のソールフードに」、
and (has become) no longer an unusual sight「珍しい光景では無くなった」、
()内は既に言っているので省略、
at our dinner tables「私達の食卓で」。
(訳2)
Do you knowで「知ってる?」、
the process of this fish becoming our national food「この魚が私達の国民食になった経緯」
and (becoming)a usual sight「よく見る光景となった」
at our dinner tables?「私達の食卓で」。