vegetative cycle的用法和樣例：
例句
- This can cut your hair's growing cycle short so the hair will only grow to a certain length before shedding.
這可能縮短你的頭髮生長周期，使得頭髮在脫落前只長到某一長度就停止生長了。 - Let us survey the growth promoters and growth inhibitors separately, then see how they interact to regulate a plant's life cycle.
我們將分別研究生長促進劑和抑製劑，然後看看它們是怎樣交互作用調節植物的生長周期。
