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Use "gravities" in a sentence
"Each twin influences the other, but, their differential "gravities" disruptively interact to produce unpredictable dynamical outcomes."
" Different directions down Nevsky, different gravities pulling the passing on their paths."
" She was a gleaming android with perky chrome breasts and a swiveling, rotating, gyrating, undulating, oscillating walk designed to allow maximum stability in various gravities."