制造有机堆肥的过程会产生热量。高温杀死了很多杂草种子，虽然不是全部。
The process of making organically rich compost produces heat. This heat kills many, though not all, weed seeds.
同样的种子和肥料项目在不同的地方可能产生完全不同的结果。
The same seed and fertilizer program may yield completely different outcomes in different places.
加拿大帝国商业银行成功地使用了一种原产于墨西哥的以种子为食的象鼻虫来控制讨厌的帕特农杂草，这种杂草已知会对印度和澳大利亚的农业和人类健康产生负面影响。
CIBC successfully used a seed-feeding weevil, native to Mexico, to control the obnoxious parthenium weed, known to exert devious influence on agriculture and human health in both India and Australia.
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