11.   Within each thunderstorm, large amounts of heat are released when water vapor condenses into cloud droplets.

n. + droplet >>共 30
water 50.00%
cloud 10.38%
blood 5.66%
fog 3.77%
oil 2.83%
ink 1.89%
mucus 1.89%
rain 1.89%
size 1.89%
blow 0.94%
cloud + n. >>共 115
cover 46.22%
formation 5.52%
bank 2.66%
base 2.66%
droplet 2.25%
pattern 1.43%
patch 1.43%
band 1.43%
increase 1.23%
sky 1.02%
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