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1·No such sunstone has survived.

没有这样的太阳石保留下来。

2·Dr Ropars suspects it was being used as a sunstone because the magnetic compasses of the day were thrown out of kilter by iron cannon.

罗帕斯博士怀疑它曾经被当做太阳石使用，因为在白天，磁性罗盘会因为铸铁的大炮失去平衡。