1.
coarse perennial ragweed with creeping roots of dry barren lands of southwestern United States and Mexico.
生长于美国西南部和墨西哥干燥贫瘠土地的粗糙的多年生豚草，有匍匐根。
2.
European perennial grass widely cultivated for pasture and hay and as a lawn grass.
欧洲多年生草，广泛栽培用作牧草、干草和草坪草。
3.
perennial American herb.
美洲一个多年生草本属。
4.
plot of perennial rye-grass
多年生黑麦草种植地块
5.
It's a perennial.
这是多年生草本植物。
6.
perennial of the genus Phytolacca.
商陆属多年生草本植物。
7.
a day-flowering biennial or perennial of the genus Oenothera.
月见草属两年生或多年生白昼开花的草。
8.
annual or perennial rhizomatous marsh grasses; seed used for food; straw used for paper.
一年生或多年生根茎沼泽草；种子食用；稻草造纸。
9.
Some grasses last only a year. Others are perennial.
有些草只生长一年，有些则是多年生的。
10.
annual or perennial herbs: bedstraw; cleavers.
一个一年或多年生草本属；垫子草；猪殃殃。
11.
annual or perennial herbs.
一年或多年生草本植物的一个属。
12.
annual to perennial herbs of the Mediterranean region.
地中海地区一个一年或多年生草本属。
13.
perennial aquatic grass of North America bearing grain used for food.
北美多年生水生草，谷粒用作食物。
14.
The Relation between Secondary Metabolites of Ambrosia. Artemisiifolia and Soil Microorganism;
豚草次生代谢产物与土壤微生物的关系
15.
perennial succulent herb with small solitary axillary or terminal flowers.
腋生或端生单花的多年生多汁草本植物。
16.
Porto and Consol lovegrass showed perennial ability and characteristics of resistance to acidity,high yield and good quality.
鸡脚草、弯叶画眉草表现多年生、耐瘠、高产、优质；
17.
The Adaptation and Evaluation of Perennial Forages in Desert Steppe;
荒漠草原地区多年生牧草的适应性及其评价
18.
The Application Trial on Manilagrass Overseeding with Perennial Ryegrass;
马尼拉草坪追播多年生黑麦草的应用研究