The method of algebra is used to prove some identities of combination. This article adopted the method of probability to prove that, and the process became more shaped.是什么意思_The method of algebra is used to prove some identities of combination. This article adopted the method of probability to prove that, and the process became more shaped.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句