The static mixer or motionless mixer, unlike hand mixing, does not add air to the mixing process, which results in an optimal mixture.
静态混合管，不需要手动搅拌，在混合过程也不需要加压，就能达到最理想的混合效果。
To make calculations manageable even by computers, most of the models suppose either that the oceans are a motionless swamp or that they don't exist at all.
为了使计算机也能进行计算，大多数模型要么假设海洋是一个静止的沼泽，要么假设它们根本不存在。
The boy stood motionless, like a mouse or a chipmunk when it knows you're watching.
男孩一动不动站着，好像一只老鼠或花栗鼠知道有人在盯着它一样。
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