某些情况下，无论使用多少除草剂，农民也无法控制野草的疯长，这样的农田不得不放弃。
In some cases, no amount of herbicide has allowed farmers to gain control of weeds and farmland has had to be abandoned.
基因改造作物是否会授粉给周遭的植物，使抗虫基因流入野地，创造出不受控制的超级野草？
Will GM crops pollinate nearby plants, casting their genes into the wild to create super weeds that grow unchecked?
野草过一段时期获得对于草甘膦的抗药性，因而需要更多的除草剂对野草进行控制。
As weeds gain resistance to glyphosate over time, more of the herbicide is required to control them.
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