Its sail-like first dorsal fin provides stability while swimming.
帆状的第一背鳍在游动时提供了稳定性。
2
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。
3
Gungans have strong leg muscles for swimming, and are aided by their long fin-like ears.