第一次世界大战中的战壕战已经够可怕了，但芥子毒气真的把战壕战推向极点。在这段短视频中，伦敦卫队博物馆的安德鲁·瓦利斯展示了英国士兵在化学战中赖以生存且令人震惊的防毒罩。 网站：https://www.oerproject.com Facebook: https://www.facebook.com/OERProject/ Twitter：https://twitter.com/OERProject 点击这里查看更多视频：https://alugha.com/oerprojectlearning
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Big history is not yet finished. How might the lessons of the past eight thresholds inform our expectations for the future? What role will you play in shaping the next threshold of the big history? Website: https://www.bighistoryproject.com Facebook: https://www.facebook.com/bighistoryproject Twitt
Clouds of diverse, chemical matter spun around our Sun, coming together to form our Earth and Solar System. Website: https://www.bighistoryproject.com/portal Facebook: https://www.facebook.com/bighistoryproject Twitter: https://twitter.com/BigHistoryPro Click here to see more videos: https://alugh
When humans began farming, new, more complex ways of living were possible. Website: https://www.bighistoryproject.com/portal Facebook: https://www.facebook.com/bighistoryproject Twitter: https://twitter.com/BigHistoryPro Click here to see more videos: https://alugha.com/oerproject
