noun ダウンロード 🔗共有 クレアチン An amino acid, 2-(carbamimidoyl-methyl- amino)acetic acid, which naturally occurs in vertebrates and helps to supply energy to muscle and nerve cells. Examples : ""Many athletes take creatine supplements to help them build muscle and improve their performance." " 多くの運動選手は、筋肉をつけ、パフォーマンスを向上させるためにクレアチンのサプリメントを摂取します。 biochemistry physiology chemistry substance compound body energy biology science AIとチャット語彙ゲーム読解練習