The development of Bas 90 began in the 1970s and started implementation in the 1980s .
The development of Bas 90 started in the 1970s and began being implemented in the 1980s .
The development of Bas 90 started in the 1970s and began being implemented in the 1980s .
このテキストを書き直す: The development of Bas 90 began in the 1970s and started implementation in the 1980s . 出力: