单词：urea circulation
urea circulation的用法和样例：
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.它是根据自然产生的尿素酶，基本上扭转了尿素循环打破尿素成氨的代谢物，包括羟基离子。
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