[] () the major changes that were made to the London Stock Exchange in 1986 in order to improve it“大爆炸”（1986 年伦敦证券交易所实行的重大改革）◆(figurative) The management adopted a big bang approach to introducing the new computer system (= made the changes suddenly and all at the same time).管理层采取“大爆炸”改革方式，引进了新的计算机系统（进行一次性突然变动）。