With the air bumping out, the cloth coving the background falls suddenly, which will makes great contradiction.
随着气柱的突然上冲，原先覆盖在背景板上的幕布却在瞬间落下，形成巨大反差效应。
Well to start, you'd better get rid of all the air bumping on the sides of the pencil, since the kinetic energy of a typical oxygen molecule is enough to destabilize the pencil.
一开始你最好排空碰撞着铅笔各面的空气。因为单是氧原子的动能就足以让铅笔失衡。
The air in a cloud is always moving around. This causes some of the droplets to bump into others. (1) The bumping droplets join together, forming larger droplets.
云中的空气总是在移动着。这便引起一些水滴相互碰撞。相互碰撞的水滴结合在一起，形成更大的水滴。
It swims and is affected by pushing and bumping air and pushing and bumping water that creates swirling.
它会滑行，并受到空气推挤和冲撞的影响，这种推挤和冲撞就造成了水漩涡。
The powder gas, generated continuously due to burning of propellant forms air-cushion among propellant grains, which can buffer and protect propellant grains from bumping, impacting and extruding.
发射药燃烧时不断产生的燃气在药粒之间形成气垫，对药粒的撞击、挤压起到缓冲保护作用。
The powder gas, generated continuously due to burning of propellant forms air-cushion among propellant grains, which can buffer and protect propellant grains from bumping, impacting and extruding.
发射药燃烧时不断产生的燃气在药粒之间形成气垫，对药粒的撞击、挤压起到缓冲保护作用。
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