预算3万买什么?比亚迪最便宜汽车选购避坑指南,3万预算购车攻略,比亚迪最经济车型选购指南
What should I buy with a budget of 30,000? A guide to avoiding pitfalls when choosing BYD's cheapest car, a car purchase strategy with a budget of 30,000 yuan, and a guide to choosing BYD's most economical models
以上为机器翻译结果，长、整句建议使用 人工翻译 。