回光线的 catacaustic
光回线
Optical loop
以上为机器翻译结果，长、整句建议使用 人工翻译 。
钥匙们闪着光缓慢的上升，在抛物线的尽头短暂停留，而后不出意外的又掉落回他手中。
They rose ever more slowly, paused, shining, at the top of their arc, and then in accordance with everything our Galilean ape brains have ever learned to expect, crashed back down into his hand.
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