摘要:
The area of study known as the history of mathematics is primarily an investigation调查研究 into the origin of discoveries in mathematics and, to a lesser 阅读全文
摘要:
so far 是常用的词组,表示“迄今为止”的意思;thus far在中学中不常用,它们什么区别呢?https://www.quora.com/Whats-the-difference-between-thus-far-and-so-far给出了答案: They both mean until th 阅读全文