用犁把地犁开，拔除杂草和其他不需要的植物。
Plows cut into the ground, and lift up weeds, and other unwanted plants.
许多非常机会主义的植物都是田野和花园中常见的杂草。
Many of the strongly opportunistic plants are the common weeds of fields and gardens.
据RRL的Kaiser Jamil 女士所说：“这种阿根廷象鼻虫不会攻击任何其它的植物，并且一对成年的象鼻虫可以在4到5天内清除掉那些杂草。”
According to Mrs Kaiser Jamil of RRL, "The Argentinian weevil does not attack any other plant and a pair of adult bugs could destroy the weed in 4-5 days."
典型的水下植物有轮藻目，池塘杂草，角苔纲和睡莲。
Typical submerged plants are Charales, pond weed, hornworts and water lilies.
杂草，就是生长在你不希望看见它们的地方的植物。
《杂草：无赖的植物是如何闯入文明并改变我们看待自然的方式》理查德•梅比著？
Weeds: How Vagabond Plants Gatecrashed Civilisation and Changed the Way We Think About Nature. By Richard Mabey.
由于人们对植物的观点没有很强的一致性，其他杂草一时被当成宝一时被当成草。
Other weeds come in and out of fashion: consistency is not a strong point in people’s attitudes to plants.
杂草常常被描述为长错了位置的植物。
苏西：我自然喜欢，但是那种遗传而来的防御能力可能会传给同科植物，然后生出需要更毒的除草剂才能控制的超级杂草。
Susie: Naturally, but those inherent defences could spread to plants in the same family and produce super weeds that would require even more toxic herbicides to control.
它们以300种植物为食，包括无花果，桑椹，玉米，柑橘类水果以及大豆，豆类和杂草。
They feed on some 300 species of plant, including figs, mulberries, corn, citrus fruits as well as soybeans, legumes and weeds.
树苗、欧亚舶来种、还有农场杂草，都与草原植物一起旺盛地生长。
Tree seedlings, Eurasian migrants, and farm weeds all thrived along with the replanted prairie species.
兔子是靠植物性食物为生的草食动物，它们的食物包括青草，胡萝卜，牧草，和叶杂草，它们从这些植物性食物得到了它们所有需要的营养。
Rabbits are herbivores that feed on plant-based foods, including grass, carrots, forbs, and leafy weeds. They get all the nutrition they need from these plant-based foods.
作物中抵抗害虫的基因会不会传播给周围的植物，从而长出需要更毒的农药才能根除的超级杂草？
Will pest-resistant genes in crops spread to surrounding vegetation and create super weeds that require more toxic chemicals to eradicate?
鹿食草，一种现正流行的花卉植物，在20世纪70年代是还被当做杂草。
Hellebore, a currently modish flowering plant, was regarded as a weed as late as the 1970s.
植物学家只要告诉我们杂草长得多快就可以了。
杂草趋向于取代其他的植物。
总是有事情可以做，剪草坪、去花床的杂草和种植球根植物。
There's always something to do, cutting the grass, weeding the flower beds, and planting bulbs.
杂草和秋麒麟草通常令人生厌，它挤走不那么顽强的植物，并找来很多害虫。
Often very annoying weeds, goldenrods crowd out less hardy plants and act as hosts to many insect pests.
外来杂草入侵的化学机制涉及到植物化学生态学的各个方面。
The chemical mechanism of exotic weed invasion might involve each aspect of plant chemical ecology.
除草剂：用来杀死或抑制不想要的植物(如杂草)生长之物，常为化学药剂。
Herbicide: Agent, usually chemical, for killing or inhibiting the growth of unwanted plants (weeds).
你是被猖獗的杂草勒紧的一株小小柔弱的植物。
什么时候植物会被当成杂草？
蒲公英被视为杂草，是因为它们生命力强，生长迅速。这种植物，可以连根拔起进行加工，而且复种容易，一年还有可能成熟两次。
Dandelions are regarded as weeds for a reason-they are robust, fast-growing plants that can be pulled up for processing and resown easily, possibly yielding two harvests a year.
利用植物化感作用防治农田杂草，可以减少化学除草剂的使用，减轻环境压力，降低生产成本，达到增加作物产量等目的。
Applying plant allelopathy to inhibit weeds can not only efficiently reduce the use of chemical herbicide and cost, but also protect environment and improve crop product.
结果显示，这些杂草一样的卡诺拉油菜植株存在一些基因改变。如果一种植物经过基因改造，这意味着它的基因被改变，来获得更好的品质。
The results showed that the weedy canola plants contained genetic changes. If a plant is genetically modified, that means its genes have been changed to produce desired qualities.
什么时候植物会被当成杂草？宾夕法尼亚州立大学的专家们给出了一个简单的答案：当其不良品质超过优良品质时。
When is a plant considered a weed? Experts at Penn State University have a simple answer: When the undesirable qualities outweigh the good qualities.
什么时候植物会被当成杂草？宾夕法尼亚州立大学的专家们给出了一个简单的答案：当其不良品质超过优良品质时。
When is a plant considered a weed? Experts at Penn State University have a simple answer: When the undesirable qualities outweigh the good qualities.
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