perennation

常见例句

• It is an organ of perennation or vegetative propagation, and is characteristic of various water plants (e.g.Sagittaria).
  这是多年生营养繁殖器官，还是多种水生植物的特征之一(例如：Sagittaria)。
• Under natural condition, the invasive plants formed superiority community easily, so it had a bigger potention of harmful effect to Lolium perenn.
  在自然条件下，外来入侵杂草容易形成单一优势种落，对多年生黑麦草草坪具有较大的危害潜力。
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