provenance source的用法和樣例：
例句
- The influence of nitrate reductase and soluble protein content on provenance growth of Quercus mongolica was investigated.
摘要研究了硝酸還原酶和可溶性蛋白含量對蒙古櫟種源生長的影響。 - The resistance is the characteristics of the provenance in relation to the neutral terpenoid contents.
結果表明，不同馬尾松種源的抗性是由其內部化學組成決定的，是種源的特徵性質。
