1. The dinosaur was a biped, walking on two legs.
这只恐龙是二足动物，用两条腿行走。

2. Humans are bipeds, unlike many other animals that walk on four legs.
人类是二足动物，不同于其他许多用四条腿行走的动物。

3. The robot was designed to mimic a bipedal human form.
这个机器人被设计成模仿人类的二足形态。

4. The bipedal alien creature moved gracefully through the forest.
这只二足外星生物在森林中优雅地移动。

5. The bipedal robot struggled to maintain its balance on uneven terrain.
这个二足机器人在不平整的地形上保持平衡感到困难。

6. Birds are technically considered bipeds, as they walk on two legs.
鸟类在技术上被认为是二足动物，因为它们用两条腿行走。