contractile root造句

例句与造句

1. Contractile root a specialized root developed by certain bulb - and corm - forming plants that serve to pull the bulb or corm down to the appropriate depth in the soil , e . g . crocus
   收缩根：在某些具有形成鳞茎或球茎的植物中特化的根结构。收缩根的作用是把形成的鳞茎或球茎定位于土壤的某一特定深度，例如番红花属的植物。
2. It's difficult to find contractile root in a sentence. 用contractile root造句挺难的