共同事業当時はもちろんそれ以前からの英語

• during the days of the joint venture and before
  

• 共同     共同 きょうどう cooperation association collaboration joint
• 同事     同事 どうじ the same event no change (on the stock market)
• 事業     事業 じぎょう project enterprise business industry operations
• 当時     当時 とうじ at that time in those days
• 時は     1. at the showing of 2. in time of〔～の〕
• はも     はも 鱧 穴子 pike conger conger eel
• もち     もち 餅 sticky rice cake 黐 birdlime 勿 must not do not be not 持ち hold charge keep
• ろん     ろん 論 argument discussion dispute controversy discourse debate theory doctrine
• それ     それ 其れ it that
• 以前     以前 いぜん ago since before previous
• から     から 殻 shell husk hull chaff from out of through since because 空 emptiness
• 当時は     1. at that tide 2. at the time 3. back in those [these] days 4. in those days
• 共同事業     1. common enterprise 2. cooperative venture 3. joint business 4. joint
• もちろん     もちろん 勿論 of course certainly naturally
• 以前から     long before〔～よりずっと〕