Cosinoidal
余弦的
??? 情景例句
Good idea, Jack. What do you think about the second part?
好主意，杰克，你對(duì)第二部分有什么看法？
Old friends and old wine are best.
古交友情深，陳酒香味醇。
Excuse me, Jim. Who's that man?
吉姆，那個(gè)人是誰？