perennial grass

• 多年生草

perennial grass的用法和样例：

例句

1. Perennial grass having stems 3 to 4 feet high,used especially in Africa and India for pasture and hay.
   多年生草，茎高到米，用作牧草和干草，特别在非洲和印度。
2. Perennial South African grass having densely clumped flimsy stems,introduced into United States especially for erosion control.
   南非多年生草，有密集簇生的茎，引入美国主要用于防腐。
3. Potassium manuring may be less critical in continuous grass farming than in ley farming.
   在多年生牧草地施用钾肥的迫切性比短期草地要小些。
4. Permanent grass has a number of advantages over clean cultivation, the system it superseded.
   多年生牧草较之已被其取代的清耕有许多优越性。