反复的施除草剂后，杂草终于被消灭了。
With repeated applications of weedkiller, the weeds were overcome.
所有的食物都可以有机种植，不需要除草剂、杀虫剂和化肥。
All the food could be grown organically, eliminating the need for herbicides, pesticides and fertilisers.
对农民来说至关重要的是，他们用来控制杂草的除草剂不能损害他们的庄稼。
It is crucially important to farmers that the herbicides they use to control weeds not damage their crops.
除草剂的使用和集约型农业使得现在小麦和大麦麦田里几乎没有杂草。
The use of herbicides and intensive forms of agriculture means that fields of wheat and barley now have few weeds.
他们发现，居住的时间越长，采用的改良植物品种越多，而使用的化学除草剂越少。
They found that longer residence correlated with more adoption of improved plant varieties but less adoption of chemical herbicides.
另一方面，人造除草剂虽然不再持久，但可以在作物生长时重新使用。
Synthetic herbicides, on the other hand, although not any longer lasting, can be reapplied as the crop grows.
为了消除这种杂草，生物学家建议用某种对人类和水生动物无毒的除草剂来处理受感染的部分湖泊。
In order to eliminate the weed, biologists proposed treating infested parts of the lake with a certain herbicide that is nontoxic for humans and aquatic animals.
大豆和玉米不是在同一块地里播种的；然而，大多数农民不愿意在他们的玉米上使用除草剂。
Soybeans and corn are not sown together in the same filed; nevertheless, most farmers are reluctant to use the herbicide on their corn.
除草剂可能会破坏湖泊中某些稀有植物的种群。
The herbicide might damage populations of certain rare plant species that the lake contains.
某种非常有效的除草剂对玉米来说是安全的，但即使是除草剂的残留物也会对大豆造成损害，该残留物在施用除草剂一年多后仍残留在土壤中。
One very effective herbicide is safe for corn, but soybeans are damaged even by the herbicide's residue, which remains in the soil more than a year after the herbicide is applied.
《华盛顿邮报》报道，专家说，主要原因之一是，农民对马利筋植物使用除草剂，而这些蝴蝶以马利筋植物为食。
The Washington Post reported, one of the main reasons, experts say, is that farmers have used herbicides on the milkweed plants that these butterflies feed on.
经五步反应合成得到磺酰脲类除草剂玉嘧磺隆。
Sulfonylurea herbicide Rimsulfuron was synthesized by a five-step reaction.
这项研究的结果将为进一步开发天花粉作为生物除草剂和杀虫剂提供理论依据。
The results of this study will provide a theoretical basis for further developing trichothecenes as biological herbicides and insecticides.
氨三唑是一种除草剂，在实验动物身上发现会导致癌症。
Aminotriazole is a weedkiller found to cause cancer in laboratory animals.
彼得：而农民就能减少使用危险的除草剂和杀虫剂。
Pete: and farmers can decrease their use of dangerous herbicides and pesticides.
但是该体系鼓励农民改变长期以来的轮作制度和混合使用除草剂，在以前这些方法很好的控制了杂草。
But the system has also encouraged farmers to alter time-honored crop rotation practices and the mix of herbicides that previously had kept weeds in check.
他们在使烟草细胞接触锌指核酸酶之外，也添加了可增强抗除草剂特性的基因片段。
When they exposed tobacco cells to the zinc finger nucleases, they also added a version of that gene that enhances herbicide resistance.
除草剂处理后大约2%的植物生存下来。说明已经发生了基因互换。
About 2% of the treated plants survived herbicide treatment, showing that gene swaps had occurred.
这样就可以在培养池里施用除草剂，杀死入侵的野生藻，使培养的生产燃料的品种不受伤害。
That would allow the herbicide to be sprayed on a pond to kill invading wild algae while leaving the fuel-producing strain unhurt.
农业科技产业大多是基于对农药和除草剂的生产。
Most of the agricultural technology industry is based on the production of pesticides and herbicides.
但是高尔夫球场对环境不是那么好，因为需要许多淡水，肥料和除草剂使球场保持绿色。
But golf courses are not known to be environmentally friendly. They demand a lot of fresh water, fertilizers and herbicides to keep them looking green.
在当时，公司由于生产草甘膦为人所熟知，草甘膦是一种农户常用的除草剂。
At that time the company was best known for Roundup, a herbicide popular with farmers.
它们包括锰、一氧化碳等有毒物质，及杀虫剂、除草剂等农用化学品。
These include specific toxins such as manganese and carbon monoxide, and agrochemicals such as pesticides and herbicides.
他们施用更多的除草剂对抗杂草会导致环境问题。
And their use of more herbicides to fight the weeds is sparking environmental concerns.
不过，这样做，得用许多除草剂，这又是另一回事了。
It took lots of herbicides to make it work but that's another story.
他们设计将核酸酶导入到控制植物对特定除草剂敏感的烟草基因中。
They designed nucleases to home in on a tobacco gene that controls the plant's susceptibility to certain herbicides.
但在你发现把强力除草剂导入海水能减小飓风威胁之前，最好考虑下对环境的影响。
But before you dig out the industrial-strength herbicide to dump into the ocean and reduce the risk of hurricanes, it might be wise to consider the implications.
环境破坏小，因为种植它们所需要的除草剂及杀虫剂更少。
More environment friendly as they require less herbicides and pesticides.
其中大部分是转换了单个基因，使其毒疫昆虫或是抗特定的除草剂，以使其能够自由应用。
Most of them have had but a single gene tweaked, either to make them poisonous to pestilential insects or resistant to a particular herbicide so that it can be used freely.
其中大部分是转换了单个基因，使其毒疫昆虫或是抗特定的除草剂，以使其能够自由应用。
Most of them have had but a single gene tweaked, either to make them poisonous to pestilential insects or resistant to a particular herbicide so that it can be used freely.
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