应当使用汉字的两种主要情况１．数字作为词素构成定型的词、词组、惯用语、缩略语或具有修辞色彩的语句。例：一律十滴水二倍体三叶虫八国联军四氧化三铁二万五千里长征第三世界一二·九”运动十月革命“七五”计划五省一市中国工农红军第二方面军上海二商局第一书记路易... Two main situations that Chinese characters should be used. Numbers form stereotyped words, phrases, idioms, abbreviations, or rhetorical phrases as morphemes. Example: all ten drops of water Diplomacy trilobata Eight Allied Forces Ferrous Oxide twenty-five thousand miles Long March Third World one two nine "Movement October 7th Five-Year Plan Five provinces and one city Chinese workers and peasants Red Army second army Shanghai First Secretary of the Chamber of Commerce Louis ...