单词：lengthening
v make longer
v become long or longer
lengthening的用法和样例：
例句
- Instead of using a leg lengthening device, shinbone experimenters may apply ankle weights to stretch out the shinbone.胫骨实验者将应用脚踝的重量延长胫骨，从而代替使用腿部延长设备。
- With limb lengthening surgery, a large fracture is created when surgeons cut the shinbone in half.通过肢体延长手术，当外科医生把胫骨切成两半时，将新生出一道裂缝。
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