Restrictive AA的用法和樣例：
例句
- The amino acids are essential nutrients for animals to obtain protein balance and the restrictive amino acids are key factors for animals to obtain protein balance nutrients.
摘要氨基酸是動(dòng)物獲取蛋白質(zhì)平衡必需的營(yíng)養，限制性氨基酸是動(dòng)物獲取蛋白質(zhì)平衡營(yíng)養的關(guān)鍵。
