例句與造句

1. "Cardinal Algebras " studied algebras whose models include the arithmetic of cardinal numbers . " Ordinal Algebras " sets out an algebra for the additive theory of order types.
2. This result is the first in an area now known as the additive theory of ideals, which studies the ways of representing an ideal as the intersection of a special class of ideals.
3. It's difficult to find additive theory in a sentence. 用additive theory造句挺難的