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Sec
01
秒
1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites
02
SEC (证券交易委员会)
an independent federal agency that oversees the exchange of securities to protect investors
03
正割
ratio of the hypotenuse to the adjacent side of a right-angled triangle
sec
01
干型
(of champagne) moderately dry
