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Shot V to the method in which the water?

LXYzww2010-04-13 14:11:36 +0000 #1

where Yao Yao2010-04-13 14:20:36 +0000 #2
made of hollow buoyancy can be greater than or equal gravity and floating debris floating in the

bundled with the buoyancy of floating debris is greater than two Gravity will be able to float

shot hanging in hydrogen power ball floating just below the ball of hydrogen to float on the water

shot and shot water into the space without gravity are naturally unsinkable floating on the water

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