当一个孩子反方向抛出时座椅结构将会向前弯曲。
The seat structure allows it to bend forward when a child is thrown against it.
当您的脚向前翻转时，保持您的脚踝弯曲可以产生更大的蹬离力量。
Keep your ankle flexed as your foot rolls forward to create more force for push-off.
站在泳池边，运动员向前弯曲，同时作蝶泳移臂的动作；
On pool deck, swimmer bends forward and practices arm action.
图中这头雄性野大白羊的角，它们随着生长向前和向上弯曲。
As the horns on this male dall sheep grow, they curve forward and upward.
从腰部或背部中部向前向下弯曲。
To bend forward and down from the waist or the middle of the back.
从腰部或背部中部向前向下弯曲。
To bend forward and down from the waist or the middle of the back.
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