a grain of sand 的weight是...
The weight of 1 a grain of sand is 3 micrograms. That is ...
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2 times bigger than ovum (2.0 to be exact).
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30 times bigger than volcanic ash .
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250 times bigger than cedar pollen .
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857 times bigger than a single drop of inkjet printer ink .
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33,333 times bigger than red blood cell .
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4,285,714 times bigger than escherichia coli .
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3,750,000,000 times bigger than influenza virus .
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7,594,936,708,860,760 times bigger than uranium atom .
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983 times smaller than mosquito .
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78,763 times smaller than a water drop .
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1,492,935 times smaller than five-yen coin .
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22,567,469 times smaller than mature mouse .
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560,615,371 times smaller than brain .
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3,322,977,671 times smaller than a shot of men's shot put .
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51,647,278,646 times smaller than doraemon .
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226,465,363,964 times smaller than the heaviest man in the world .
