铁矿石产地：印度尼西亚，南加里曼丹，马辰区。
Origin of iron ore: banjarmasin area, south kalimantan, Indonesia.
通过考辨，可以确认，马瑞辰曾于嘉庆十二年前后掌教过白鹿洞书院。
The survey proved that Ma Ruichen had taught in Bailudong College twelve years after reign of Jiaqing.
但由于文献阙佚，还不能完全否定马瑞辰于释归后曾主持过白鹿洞。
But due to the lost literature, we can not deny that Ma Ruichen had been the president of Bailudong College.
但由于文献阙佚，还不能完全否定马瑞辰于释归后曾主持过白鹿洞。
But due to the lost literature, we can not deny that Ma Ruichen had been the president of Bailudong College.
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