extracellular ferment的用法和样例：
例句
- Some extracellular proenzymes may be activated by secreted lysosomal proteinases.
有些细胞外酶原能被分泌的溶酶体蛋白酶所激活。 - For some microorganisms extracellular enzyme production is of major importance for normal growth and it ws from this source that enzymes were first commercially exploited.
对于一些为微生物来说，胞外酶的产生对正常的生长是非常重要的，酶的最初的商业化利用正是来源与此。
