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两千多年以前,古希腊的哲学家兼科学家展开了一项令人望而生畏的计划,其困难度有如今日探索太阳系的边界,那就是测定整个地表的大小与形状。对古希腊人而言,地表简直大得不可思议。不论是希腊人自己,或是他们接触过的任何文明,活动范围都只是大地的一小部分。想要根据能直接测量的微小范围,
More than two thousand years ago, the ancient Greek philosophers and scientists embarked on a daunting plan with the difficulty of exploring the boundary of the solar system today, that is, measuring the size and shape of the entire surface. For ancient Greeks, the surface is simply incredible. Whether the Greeks themselves, or any civilization they have come across, the range of activities is only a small part of the earth. Want to be able to directly measure the tiny range,