Versines
(versine 的復數(shù)) (=versed sine)[數(shù)]正矢
??? 情景例句
Yes, it's so easy.
沒錯， 它真簡便。
Happy is he that is happy in childhood.
童年時代快樂的人是幸福的。
If you want, you can change it for another one.
如果你要換，你可以換另一件。