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- It is very difficult to control perennial weed field horsetail (Equsetum arvense L. ). 摘要问荆是一种多年生难防杂草。
- It is non-selective, which means it kills a wide range of annual grasses and broad-leaved weeds and the tops of established perennial weeds. 具有非选择性，意味着可以根除多数的一年生杂草和宽叶种子并保持长效作用。
- This common and variable, perennial weed is distinguished by its contracted panicle and short glumes. The spikelets are frequently infected by a black smut fungus. 普通和易变的这，多年生植物杂草被因为它的收缩圆锥花序和短区分。一种黑色的劣质煤菌经常感染小穗。
- Perennials - It makes sense to eliminate perennial weeds early.By pulling those first plants, you might prevent a hostile lawn takeover. 多年生植物，尽早去除很有意义，当把大量杂草去处后，就可以避免草坪被杂草统治。
- Seed Bank of Perennial Weeds in Paddy Fields 稻田土壤多年生杂草种子库研究
- The garden is overgrown with weeds. 这个园子里长了许多野草。
- My fishing line got entangled in some weeds. 我的钓鱼线同杂草纠缠在一起。
- Summer fallow is the best method of destroying weeds. 夏季休耕是消灭杂草的最好办法。
- The weeds grew in wanton profusion. 遍地野草丛生。
- It's a garden infested with weeds. 这是杂草丛生的花园。
- Experiments on Wei-Nong in control of perennial weeds in scattering-transplanted rice fields 威农防除抛栽稻田多年生杂草试验小结
- Can you free the propeller from the weeds? 你能把螺旋桨上的草除掉吗?
- The garden is choked with weeds. 花园杂草丛生。
- There are so many weeds in his field! 他的田里有那么多野草！
- Weeds tend to displace other plants. 杂草越来越多，有取代其他植物之势。
- These weeds are really very obstinate. 这些草实在难以除尽。
- The gardener used a hoe to remove weeds. 这园丁用锄头锄草。
- A thick growth of weeds covered the yard. 庭院长满浓密的野草。
- He eradicated weeds in his garden. 他把花园中的杂草根除了。
- Investigate Report on Perennial Weeds of Sonchus arvnensis and Cirsium setouem etc Occurring Damage in Farmland of Qinghai 青海农田苣荬菜、大刺儿菜等多年生杂草发生危害调查报告
