So let's say he's doing, I don't know, anatomy, and he wants to revise the upper limb.

假设他在学习，我不知道，解剖学，他想复习上肢的相关内容。

During the torch relay, some people with disabilities will use upper and lower limb assisted exoskeleton robots to help them carry the torch.

在火炬传递过程中，一些残疾人会使用上下肢辅助外骨骼机器人来帮助他们携带火炬。