[Li-Zhuo-Ran]

Summary

• Compared the NumPy lecture against the English source, including broadcasting, mutability, code comments, and exercises.
• Replaced the overly literal “garbage values” translation with the clearer technical term “未初始化的值”.
• Confirmed code-cell, figure, exercise, solution, hint, note, and epigraph counts match the English source.

Validation

• git diff --check

Refs #88