[Sam] These grasses are what we call perennial grasses.
- [Sam] 这些草就是我们所说的多年生草。
英语百科
Perennial plant
A perennial plant or simply perennial is a plant that lives for more than two years. The term is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also widely used to distinguish plants with little or no woody growth from trees and shrubs, which are also technically perennials.