rittenhouse david 中文意思是什麼
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It seems to have been invented by the american astronomer david rittenhouse in about 1785.
它似乎是美國天文學家DRittenhouse在1785年前後發明的。 -
It seems to have been invented by the american astronomer david rittenhouse in about 1785
它似乎是美國天文學家d rittenhouse在1785年前後發明的。
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