名词的原形是单数的，有标记的名词则变成复数名词。

Nouns are presumed to be singular until marked for plural.

youdao

它的最近进展使我们将已有的复数形式的解转变成实数形式，进而可去解决一些迄今尚未解出的问题。

Recent advances in the formalism allow us to simplify existing complex form solutions to real form ones and to solve heretofore unsolved problems.

youdao

它的最近进展使我们将已有的复数形式的解转变成实数形式，进而可去解决一些迄今尚未解出的问题。

Recent advances in the formalism allow us to simplify existing complex form solutions to real form ones and to solve heretofore unsolved problems.

youdao