名词
中文翻译：向上的腿
同义词：
['upright leg', 'upward leg']
例句：
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1.The climber was able to reach the summit of the mountain with his upward leg.
登山者能够用他的上腿到达山顶。
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2.The soldier used his upward leg to push himself up from the ground.
士兵用他的上腿把自己从地上推起来。
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3. The athlete stretched his upward leg as he ran down the track.
运动员在跑道上跑步时伸展他的上腿。