formulaen.
英 'fɔːmjʊliː | 美 'fɔrmjəli
中文n. 公式（formula的复数）；规则；客套话
词根词源
formulae (n.)plural of formula.
Men who try to speak what they believe, are naked men fighting men quilted sevenfold in formulae. [Charles Kingsley, "Letters," 1861]
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