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sang-froid (n.)
[sang-froid 词源字典]
"presence of mind, composure," 1712, from French
sang froid
, literally "cool blood," from
sang
"blood" (from Latin
sanguis
; see
sanguinary
) +
froid
"cold" (from Latin
frigidus
; see
frigid
).
[sang-froid etymology, sang-froid origin, 英语词源]