translation.en: It started out in the '80s, but at the beginning it was machines carving out of a foam block a model that was very, very fragile, and could not have any real use.
translation.zh: 它开始于 '80 年代，开始时 是用机器雕刻泡棉块 这种模型很脆弱， 很难有实际用途。