urea cycle的用法和樣例：
例句
- It is based upon a naturally occurring enzyme called urease that essentially reverses the urea cycle by breaking down urea into metabolites that include ammonia and hydroxyl ions.
它是根據自然產生的尿素酶，基本上扭轉了尿素循環打破尿素成氨的代謝物，包括羥基離子。 - Aspartic acid can be broken down in the KREBS CYCLE.
在三羧酸循環中天冬氨酸可以被分解。 - In the DREBS CYCLE it combines with pyruvic acid, leading to loss of carbon dioxide.
在三羧酸循環中，它可以和丙酮酸結合，導致二氧化碳的損失。
