名詞 sec:

1. 1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites
   同義詞：second, s
2. ratio of the hypotenuse to the adjacent side of a right-angled triangle
   同義詞：secant
3. an independent federal agency that oversees the exchange of securities to protect investors
   同義詞：Securities and Exchange Commission

形容詞 sec:

1. (of champagne) moderately dry
   同義詞：unsweet