The Skyhook is a battery of orbital energy.

天钩就像是能够储存轨道能量的电池。

It skimmed Earth's atmosphere Sunday in a slingshot maneuver to give Lucy an extra boost of orbital energy.

周日，它以弹弓动作掠过地球大气层，为露西提供了额外的轨道能量。

As their orbits shrink, the black holes should radiate away some of their orbital energy as the sought-after gravitational waves, predicted by Einstein a century ago.

伴随着这三个黑洞的旋转轨道的范围缩小，它们会释放桑出一定量的轨道能量，也就是人们向往看到的重力波，关于这一点，爱因斯坦早在一个世纪以前就提出过猜想。