近视是视力不正常的伸长，使远距离的物体模糊不清。
Myopia (nearsightedness) is an abnormal elongation of the eye, causing distant objects to appear blurred.
丝光过程使棉纤维沿直径方向膨胀，沿长度方向伸长。
The mercerization process causes the cotton fibers to swell laterally and shrink longitudinally.
骨盆保持着平衡，因为腰肌使大腿前侧屈曲，臀肌使大腿前侧伸长或者伸展。
The pelvis is kept balanced because the psoas flexes the thigh, and the glutei make the thigh lengthen, or extend.
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