Over the past one to two years, the time has been ripening for a conversion of Japan’s economic system from the one-way system of mass production, mass-consumption and mass- disposal to a resource cycling system that puts as little burden on the environment as possible.
スラッシュは、カンマ、前置詞・接続詞の前に入れて読み下します。
Over the past one to two years, /the time has been ripening /for a conversion of Japan’s economic system /from the one-way system of mass production, mass-consumption and mass- disposal /to a resource cycling system /that puts as little burden on the environment /as possible.