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单词：I was glad to do it 相关文章
On the day that President Obama once again said the Assad regime's use of chemical weapons would be a game changer after a week of weighing U.S. military action or directly supporting opposition. A U.S.ally Israel, has apparently hit Syria from the a
发表于:2018-12-19 / 阅读(59) / 评论(0)
CNN2013年(五)月
CNN2013年(五)月
Wanna be lazy and productive at the same time? Try a napbecause napping can improve learning. So said U.C. Berkeleys Matthew Walker February 21st at the meeting of the American Association for the Advancement of Science in San Diego. He followed two
发表于:2018-12-24 / 阅读(42) / 评论(0)
Scientific American(二)月
Scientific American(二)月
工作累了，就趴在办公桌上小睡片刻，这样有助于提高你的记忆力。据英国《每日邮报》报道，德国一项最新研究发现，白天打个盹不仅可以使人恢复体力，还能帮助大家提高记忆力。 To Lea
发表于:2019-01-02 / 阅读(74) / 评论(0)
60秒科学
60秒科学
图 graph 子图 subgraph 有向图 digraph(directed graph) 无向图 undigraph(undirected graph) 完全图 complete graph 连通图 connected graph 非连通图 unconnected graph 强连通图 strongly
发表于:2019-02-01 / 阅读(65) / 评论(0)
实用英语
实用英语