京张高速铁路于2019年12月开通。这条铁路是中国铁路发展的一个里程碑，因为它采用了铁路建设的最新技术。
The opening of the Beijing-Zhangjiakou high speed railway took place in December, 2019. The railway is a milestone in China's railway development because it has used the latest technologies in railway building.
帕特森的研究结果是在三月公布的，结果显示维京人在冰岛的定居者刚刚到来几十年后，大约在公元970年前后，一场严寒让他们陷入困境。
Patterson’s findings, published in March, suggest that Viking settlers in Iceland ran into trouble when a cool period hit around A.D. 970, just a few decades after they arrived.
10月9日是列夫·埃里克森之日（Leif Erikson Day），这个日子是纪念大约在公元1000年左右，维京（或者是挪威）开拓者带着他的船员成为第一个有史以来登陆到北美的欧洲人。
October 9 is Leif Erikson Day, honoring the Viking (or Norse) explorer who sailed his crew to the first recorded landing of Europeans in North America around the year 1000.
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