the domino theory

剑桥词典

the belief , especially in the 1950s and 1960s, that if one country became communist, other countries near that country would more easily also become communist
多米諾骨牌理論（1950和1960年代的政治用語，指如果一個國家成爲共産主義國家，其周圍國家也更易成爲共産主義國家） 返回 the domino theory