名词
中文翻译：跑者链
同义词：
['runner link', 'racer chain']
例句：
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1.The runner chain is the key to unlocking the door.
跑者链是打开门的关键。
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2.The runner chain was designed to improve efficiency in long-distance running.
跑者链设计用来提高长距离跑步的效率。
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3.The runner chain has become a popular choice for athletes who want to reduce their impact on the ground.
跑者链已经成为运动员减少对地面冲击的热门选择。