双足机器人有良好的地面适应能力，它可以通过改变腿部结构来达到跨越不同的障碍物的，具有广阔的应用前景。
The biped robot has better adaptability to ground, it has wide application prospect, it may reach over various obstacles by changing the structure of the legs.
在跨越鸿沟之前，他们至少需要能够达到鸿沟。
美国的黑人较其他族裔在更短的时期内跨越了一些最高的障碍，达到了一个更远的距离。
Black Americans have come a greater distance, over some of the highest hurdles, in a shorter period of time than any other racial group.
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