We don't go swimming from October to March because there may be box jellyfish in the water.

我们从10月到3月不去游泳，因为水里可能有箱形水母。

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Inside the box, the scientists created a trail with their artificial fish, which was essentially a rubber fin on a stick that created a trail similar to the swimming motion of a real fish.

在那个盒子里，科学家用假鱼设计了游动轨迹，基本上，那是由橡胶鱼鳍形成的，和真正的鱼游轨迹十分相似。

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Inside the box, the scientists created a trail with their artificial fish, which was essentially a rubber fin on a stick that created a trail similar to the swimming motion of a real fish.

在那个盒子里，科学家用假鱼设计了游动轨迹，基本上，那是由橡胶鱼鳍形成的，和真正的鱼游轨迹十分相似。

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