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ad valorem
[ad valorem 词源字典]
type of customs duties, 1711, Modern Latin, "(in proportion) to the value," from
ad
"to" (see
ad-
) + Late Latin
valorem
, accusative of
valor
"value" (see
value
(n.)).
[ad valorem etymology, ad valorem origin, 英语词源]
[ad valorem 词源字典]