Name six perennials and six annuals suitable for indoor flower arrangement.列出多年生及一年生花朵各六种,它们必须是适合插花的.Herbage can be divided into three categories : annuals , biennials, and perennials.草本植物可分成一年生 、 二年生和多年生.Perennials like...

perennials的音标：perennials的英式发音音标为：[pə'renɪəls]perennials的美式发音音标为：[pə'renɪrls]...

n.多年生植物( perennial的名词复数 )...