单词：mutan
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RACHEL MARTIN, HOST: Hugh Hefner has died at the age of 91. He created Playboy magazine at his kitchen table in Chicago in the early 1950s. It became not only a brand but it came to symbolize a lifestyle, both glorified and despised, of lavish partie
发表于:2018-12-02 / 阅读(88) / 评论(0)
2017年NPR美国国家公共电台9月
2017年NPR美国国家公共电台9月
by Jason Marshall Weve spent the last few articles building our numerical vocabulary from the ground up. Today, were going to talk about something that sounds hard, but is actually pretty easy...and very useful too: the commutative property of additi
发表于:2019-01-02 / 阅读(168) / 评论(0)
数学英语
数学英语