单词：ergosphere
ergosphere的用法和样例：
例句
- This spinning area surrounding the event horizon is called the ergosphere and has an ellipsoidal shape.这活动视界周围旋转的区域是所谓的能层而具有椭圆形。
- However, because space-time itself is moving in the ergosphere, it is impossible for objects to remain in a fixed position.然而因为时空本身是在能层里移动，物体保持在固定位置是不可能的。
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