1.
annual or perennial herbs with inflated seed pods; some placed in genus Lesquerella.
一年生或多年生杂草，具有膨胀的果荚；其中的一些北归于雷克斯勒属。
2.
annual weedy grass used for hay.
一年生杂草用作干草。
3.
Annual broadleaf and grass weeds are major problems.
主要杂草是一年生阔叶杂草和禾本科杂草。
4.
weedy plant of southeastern United States having divided leaves and long clusters of greenish flowers.
一种一年生杂草，叶多裂，花序疏散而伸长。
5.
common European perennial naturalized worldwide; a troublesome weed.
普通欧洲多年生草，遍布世界各地；一种棘手的杂草。
6.
The most prevalent weeds around recently planted trees are usually grass and annual broadleaved weeds.
在新栽植的幼树周围，长得最多的杂草通常是牧草和一年生阔叶杂草。
7.
genus of Old World annual or biennial or perennial herbs with racemose flowers; many are considered to be weeds.
旧大陆一年或二年或多年生草本植物的一个属，总状花序的花；许多被认为是杂草。
8.
annual or perennial grasses including decorative and meadow species as well as notorious agricultural weeds.
一个一年或多年生禾本属，包括装饰性和草坪用草品种和声名狼藉的农业杂草。
9.
perennial stellate and hairy herb with small yellow flowers of mountains of southern Europe; sometimes placed in genus Sisymbrium.
欧洲南部的多年生，星形的，多毛的杂草；花小呈黄色。
10.
annual weedy herb with ephemeral yellow purple-eyed flowers; Old World tropics; naturalized as a weed in North America.
一年生的杂草多的药草，有短暂的黄紫色的花；东半球热带地区分布；作为一种草移植到北美。
11.
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。
12.
weedy annual grass often occurs in grainfields and other cultivated land; seeds sometimes considered poisonous.
一年生杂草，多见于粮田和其他耕地；种子有时被认为有毒。
13.
coarse weedy American perennial herb with large usually perfoliate leaves and purple or dull red flowers.
美洲多年生粗杂草，茎穿过巨大的叶子，花紫色或暗红色。
14.
An Old World perennial grass(Imperata cylindrica), widespread as a weed in warm regions and used for thatching.
白茅一种东半球多年生的草（印度白茅白茅属），作为杂草广泛分布于温暖地区，盖层顶用
15.
perennial American herb.
美洲一个多年生草本属。
16.
plot of perennial rye-grass
多年生黑麦草种植地块
17.
It's a perennial.
这是多年生草本植物。
18.
perennial of the genus Phytolacca.
商陆属多年生草本植物。