all moving fin

例句：

1. 1.The all-moving fin is a crucial part of the fish's swimming mechanism.
   所有移动的鳍是鱼游泳机制中至关重要的部分。
2. 2. The all-moving fin helps the fish to maintain its balance and control its movements.
   所有移动的鳍帮助鱼保持平衡，控制其运动。
3. 3. The all-moving fin is responsible for propelling the fish through the water.
   所有移动的鳍负责推动鱼在水中前进。