PCA

例句：

1. 1.The performance was a hit, but the PCA was disappointing.
   这次表演很成功，但PCA部分让人失望。
2. 2. The new product has a high PCA, which is good for health.
   新产品的PCA含量高，对健康有益。
3. 3. The company's PCA ratio is below industry standards, indicating potential risks.
   公司的PCA比率低于行业标准，表明存在潜在风险。