单词:rabdology
(arithmetic) The practice of performing arithmetic using Napier's bones.
单词:rabdology 相关文章
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英语单词和汉字一样,存在着很多的偏旁部首字根,知道了字根你就可以根据它们直接来猜测单词的意思,虽不说百分之百猜准,但起码可以猜测个大概,至少在别人告诉过你单词的意思后你