关于英语中的“back then”的中文译法,

关于英语中的“back then”的中文译法,如：1、Did you ever speak about what the papers said back then?2、What do you think people's main concern was back then?3、You see,many people back then who wanted to disguise themselves would let their beards grow.4、No way.You've no idea what the mentality was like back then.中的“back then”会有不同译法吗.