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一级运动员 vs 二级运动员
在中国体育体系中，一级运动员（Class 1 Athlete）和二级运动员（Class 2 Athlete）是专业运动员等级认证的两个层级。一级运动员需在全国性比赛中取得前六名或国际赛事中达到特定成绩，代表更高水平的竞技能力；二级运动员则通常需在省级赛事中进入前三名，属于次高级别。
In China's sports system, Class 1 Athlete and Class 2 Athlete are two tiers of professional athlete certification. A Class 1 Athlete must achieve top-six finishes in national competitions or meet specific standards in international events, representing elite competitive ability. A Class 2 Athlete typically requires top-three placements in provincial competitions, reflecting a slightly lower tier.
MLB Comparison
虽然MLB美职棒大联盟没有直接对应的等级认证，但其球员发展体系可作类比：
一级运动员水平类似MLB大联盟（MLB）或3A小联盟（Triple-A）球员，具备顶尖技术且接近职业最高舞台。
二级运动员水平更接近2A（Double-A）或高阶1A（High-A）小联盟球员，展现潜力但仍需提升稳定性。
While MLB has no direct equivalent certification, its player development system offers parallels:
Class 1 Athlete-level skill resembles MLB or Triple-A players, showcasing elite skills near the top professional stage.
Class 2 Athlete-level skill aligns closer to Double-A or High-A prospects, demonstrating potential but requiring refinement.
核心区别（Key Differences）
中国等级认证强调赛事成绩，而MLB体系通过小联盟层级（Minor Leagues）评估球员发展进度。两者目标一致——筛选精英，但实现路径不同。
China's certification focuses on competition results, while MLB evaluates progression through Minor League tiers. Both aim to identify elite talent but through distinct systems.
