In Switzerland, a small school of zebrafish swim around a circular path, with a camera overhead tracking their position.

在瑞士，一小群斑马鱼绕着圆形路径游动，头顶上的摄像头跟踪它们的位置。

Astronomers spent the next two decades meticulously tracking the position of Uranus across the sky, but it still didn't fit Bouvard's predictions.

天文学家在接下来的二十年里仔细追踪天王星在天空中的位置，但它仍然不符合 Bouvard 的预测。