But some farmers have used so much glyphosate that a number of kinds of weeds can now resist it.

VOA: special.2010.04.27

And that's a little bit down in the weeds, it's a detail, but one I want to stress.

这是很具体的东西，这是个细节，但是我想强调下这一点。

麻省理工公开课 - 计算机科学及编程导论课程节选

The problems are set up so that, if you start down the right path, it should be pretty straight-forward to work it through If you start down a plausible but incorrect path, you can sometimes find yourself stuck in the weeds somewhere, and we want to bring you back in.

问题提出了，如果你从，一开始就走正确的道路，解决的途径,就一目了然了,如果你走上一条貌似正确但实际错误的道路，你会在某时某刻,发现自己陷入泥沼，于是我们就会把你拉回来。

麻省理工公开课 - 计算机科学及编程导论课程节选

Eradicating weeds means that you have to remove all the seeds and roots so the plants will not grow back.

VOA: special.2010.08.10

We're going to get down into the weeds in a second here.

一会儿我们就要,从细节开始讲起了。

麻省理工公开课 - 计算机科学及编程导论课程节选

Tilling can remove weeds and the waste from last season's crops and help break down old plant material into fertilizer.

VOA: special.2010.09.28

May Berenbaum says people also can help the honeybee by planting more flowers and showing less hostility toward weeds.

VOA: special.2011.05.24

Professor Ervin says this means that some farmers are again using the more toxic herbicides to control weeds.

VOA: special.2010.04.27

A more common way to deal with weeds is to control them enough so that the land can be used for planting.

VOA: special.2009.05.26

But even mulch has its limits. Natural resource specialists point out that weeds can be transported in mulch.

VOA: special.2010.08.10

This form of grazing can reduce the need for pesticide treatments by reducing the growth of weeds.

VOA: special.2010.01.19

Natural resource specialists in the Queensland government in Australia note that weeds can be transported in mulch.

VOA: special.2009.05.26

Other controls include turning over the soil, pulling the weeds or covering them with mulch made of wood, garden waste or other material.

VOA: special.2010.08.10

These include natural and organic methods to control harmful insects and weeds instead of using chemicals.

VOA: special.2009.07.14

He says a dense, competitive crop that quickly shades the soil will help suppress many weeds.

VOA: special.2009.05.26

Yet animals like sheep or goats can provide a biological control -- they eat weeds.

VOA: special.2009.05.26

The same is true of seeds that pass through farm animals that graze on weeds.

VOA: special.2009.05.26

Yet animals like sheep or goats eat weeds, so they can provide a biological control.

VOA: special.2010.08.10

Other controls include turning over the soil, pulling the weeds by hand or covering them with mulch made from wood, garden waste or other material.

VOA: special.2009.05.26

He says a dense,competitive crop that quickly shades the soil will help suppress many weeds.

VOA: special.2010.08.10

He says one of the most common methods for suppressing weeds is dense planting.

VOA: special.2009.05.26

The same is true of seeds that pass through animals that graze on weeds.

VOA: special.2010.08.10

Control weeds growing around bean plants, but be careful not to harm the plants.

VOA: special.2009.03.24

Professor Curran says another way to make use of weeds is to compost them.

VOA: special.2010.08.10

Professor Curran says composting weeds is another way to make use of them.

VOA: special.2009.05.26

Some people burn weeds or bury them deeply or make them into mulch.

VOA: special.2010.08.10

The whole Obama family, including the president, will pull weeds in the garden.

VOA: special.2009.03.31

British nature writer Richard Mabey offers support for weeds in his new book.

VOA: special.2011.07.26

Experts advise using two or more control methods to deal with weeds.

VOA: special.2009.05.26

Preventing the spread of weeds is an important part of weed management.

VOA: special.2010.08.10