It took lots of herbicides to make it work but that's another story.
不过，这样做，得用许多除草剂，这又是另一回事了。
Herbicides are difficult to apply horizontally over long distances.
要在长段距离的水平方向施用除草剂也很困难。
More environment friendly as they require less herbicides and pesticides.
环境破坏小，因为种植它们所需要的除草剂及杀虫剂更少。
The influence of these two herbicides to soil enzymes were chosen for this study.
本文以这两种除草剂为研究对象，研究了他们对土壤酶的影响。
Many problems are present in these herbicides such as environmental influence, waste water etc.
但此类除草剂也存在不少问题，如对环境影响、废水等。
Many problems are present in these herbicides such as environmental influence, waste water etc.
但此类除草剂也存在不少问题，如对环境影响、废水等。
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