当人屈膝迈步时，膝行拉条会储存能量。
The knee brace harvests energy generated when someone bends their knee to take a step.
我养成了一个屈膝行走的习惯。
“我很愿意，陛下，”琼说着深地屈膝行礼。
"I should like it very much, your majesty," said Joan, and made a deep curtsey.
灰姑娘先把脸和手洗乾净，然后走进来很有教养地向王子屈膝行礼。
She first washed her hands and face clean, and then went and bowed down before the prince, who gave her the golden shoe.
灰姑娘先把脸和手洗干净，然后走进来很有教养地向王子屈膝行礼。
First she washed her face and hands quite clean, and went in and curtseyed to the prince, who held out to her the golden shoe.
对手术组与CT干预组的右膝行前交叉韧带切断加内侧半月板切除术，左膝作为空白对照，不予手术。
Surgery Group and CT intervened Group were intervened by cutting off the anterior cruciate ligament and the medial meniscus of their right knees, while the left knees as the control samples.
对手术组与CT干预组的右膝行前交叉韧带切断加内侧半月板切除术，左膝作为空白对照，不予手术。
Surgery Group and CT intervened Group were intervened by cutting off the anterior cruciate ligament and the medial meniscus of their right knees, while the left knees as the control samples.
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