The middle and lower level of strong acid rain weather is downward motion, inhibiting the spread of pollutants.

强酸雨天气中低层为下沉运动，抑制了污染物的扩散。

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The key is absorbing the downward motion and reversing the force into an upward motion as rapidly and smoothly as possible.

要点就是吸收向下的动力，并尽可能迅速平稳地将这个力量转换成向上的动力。

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After washing, starting from the bottom, gently brush hair using a downward motion and gradually move up until all of the hair is brushed.

清洗过之后，从底部开始，轻轻地向下梳头发，并且逐渐向上使整个发片都被梳理到。

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String players are taught whether it's cellists going this way, downbeat or violas and violinists coming down this way that the downward motion of the hand or the pull across the strong pull across should come with the downbeat; that emphasizes the downbeat.

弦乐手们都是这样教出来的,是不是大提琴手这样的时候或者中提琴手,还有小提琴手们在这里这样拉,当手势冲下,很重的向下的手势时候,是重拍出现的时候,都是在强调重拍的

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And the challenge is to combine "the permission to be human" to experience the emotion to go through the motion and yet not to enter the downward spiral where six months later, after small incident, I'm still in that rot.

困难在于将之与准许为人相结合“,去体会情绪，实现转移,但不会进入下行螺旋，在发生小小意外六个月后，仍心情低落。

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The serrated bread knife cuts with a sawing motion instead of a downward force, keeping your sandwich from getting smooshed.

FORBES: No. 1 The Knife

Guidant also announced that if the motion for a stay is denied, it will be revising guidance downward for 2003.

FORBES: Magazine Article