perennial weed

• 多年生杂草

perennial weed的用法和样例：

例句

1. Small tufted perennial herb of mountains of central and southern Europe having very small flowers of usually leafless stems,sometimes placed in genus Lepidium.
   在欧洲中部和南部的山上长的小穗的多年生杂草，具有非常小的花，通常枝干无叶。