在地球的重力场中，负的能量相应于有界限运动，正的能量相应于无界限运动。
In the gravitational field of the earth, negative energy corresponds to bounded motion and positive energy to unbounded motion.
在地球的重力场中，负的能量相应于有界限运动，正的能量相应于无界限运动。
In the gravitational field of the earth, negative energy corresponds to bounded motion and positive energy to unbounded motion.
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