[Li-Zhuo-Ran]

Summary

• Compared the explanations of Python performance, vectorization, JIT compilation, parallelism, CPUs, GPUs, and TPUs with the English source.
• Clarified scientific-computing and memory-transfer terminology while leaving executable examples unchanged.

Validation

• git diff --check
• Confirmed code-cell, figure, and note directive counts match the English source.

Refs #88