2022年3月7日
摘要: 词源:past participle [过去分词] of calculare, from calculus 'stone used in counting'. 微积分:calculus. An electronic calculator is typically a portable electro 阅读全文
posted @ 2022-03-07 22:56 华容道专家 阅读(111) 评论(0) 推荐(0)