汉语翻译：
pl. 客套话, 公式, 规则英语解释：
名词 formula:
a group of symbols that make a mathematical statement同义词：formula, expression
directions for making something同义词：recipe, formula
a conventionalized statement expressing some fundamental principle同义词：formula
a representation of a substance using symbols for its constituent elements同义词：formula, chemical formula
something regarded as a normative example同义词：convention, normal, pattern, rule, formula
a liquid food for infants同义词：formula
(mathematics) a standard procedure for solving a class of mathematical problems同义词：rule, formula
例句：`How d'you do' and `Excuse me' are social formulae.｀你好＇和｀对不起＇是社交中的客套语。
