revolve ⪢⪢
To _____ around something is to keep it as the main feature or focus.
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 revolve ⪢⪢
My life _____s around sports.
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 revolve ⪢⪢
And Greek life has traditionally _____d around the sea.
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○○○ Copernicus's theory ⪢⪢
When Galileo announced that he believed in Copernicus's theory that the earth revolved around the sun, some officials of the Roman Catholic church were angry. #possessive
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○○○ heliocentric ⪢⪢
In a heliocentric model the Sun, not the Earth, is in the center and all other objects including the Earth orbit the Sun. In this model the Earth is moving in two ways. It revolves arround the Sun and it also rotates on an axis. → spin
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