bain-marieyoudaoicibaDictYouDict[bain-marie 词源字典]
bain-marie: [19] In its origins, the bain-marie was far from today’s innocuous domestic utensil for heating food over boiling water. It takes its name from Mary, or Miriam, the sister of Moses, who according to medieval legend was an adept alchemist – so much so that she had a piece of alchemical equipment named after her, ‘Mary’s furnace’ (medieval Greek kaminos Marias). This was mistranslated into medieval Latin as balneum Mariae ‘Mary’s bath’, from which it passed into French as bain-marie.

English originally borrowed the word in the 15th century, in semi-anglicized form, as balneo of Mary. At this time it still retained its original alchemical meaning, but by the early 19th century, when English adopted the French term, it had developed its present-day use.
[bain-marie etymology, bain-marie origin, 英语词源]
bain-marie (n.)youdaoicibaDictYouDict
1822, from French bain-marie, from Medieval Latin balneum Mariae, literally "bath of Mary." According to French sources, perhaps so called for the gentleness of its heating. Middle English had balne of mary (late 15c.). French bain is from baigner "to bathe," from Latin balneare.