Discussing swimming comebacks

I can explain how comebacks work in swimming, focusing on splits, lactate levels, timing, breath control, turn speed, and stroke efficiency. I should invite the user to share their splits, suggesting I can create a visualization. I’ll also offer a Python snippet if needed but keep it simple overall. It’s essential to clarify which race they’re referring to—there could be a risk of hallucination. I'll respond in Chinese, offering them four options for what they might want to explore further!