案例分析学习：巴黎帕耶宏高中，美国罗得岛州站，英国布拉德福德体育馆防火。
Study of case: Pailleron high school, The Rhode Island Station, Fire of stadium in Bradford.
地球上有许多学习研究外星球的研究站。
There are many research stations on the earth in which outer space is studied.
地球上有许多学习研究外星球的研究站。
There are many research stations on the earth in which outer space is studied.
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