They make traditional food by using modern technology.
題干:食品和科技公司如何在春節(jié)期間制作傳統(tǒng)食品?
根據(jù)第三段第3-4行Food and technology companies were also invited to show how to make traditional food by using modern technology. 食品和科技公司也被邀請展示如何使用現(xiàn)代技術(shù)制作傳統(tǒng)食品??芍?,食品和科技公司使用現(xiàn)代技術(shù)制作傳統(tǒng)食品。故答案為They make traditional food by using modern technology.