Leaf aging的用法和樣例：
例句
- The changes of polyamines during peanut leaf senescence of two different senescent type peanut varieties were studied.
在大田條件下以兩個不同衰老型花生品種為材料，研究了葉片衰老過程中多胺的變化。 - The metabolizing course of reactive oxygen species in rice leaves and regulatory countermeasures of delaying leaf senescence were introduced in the paper.
介紹了水稻葉片中活性氧的代謝過程及目前延緩葉片衰老的調控手段。
