单词：protein nitrogen
[医] 蛋白氮
protein nitrogen的用法和样例：
例句
- Peptone, a semidigested protein, is primarily a nitrogen source.属于半分解蛋白质的蛋白冻基本上是一种氮源。
- The plant requires nitrogen in order to make proteins.植物需要用氮来制造蛋白质。
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