Broad-spectrum herbicides highly toxic to humans and other species .

广谱除草剂对人类和其他物种高度有害。

Herbicides can be used to keep down unwanted plants .

除莠剂可以被用来节制多余的植物的发展。

Effects of herbicides on slopeland ecosystems .

杀草剂对坡地生态系之影响。

The most popular crop is soya , while the most common modification is tolerance to herbicides .

最受欢迎的转基因作物是大豆，而最常见的基因改造是对除草剂的耐受性。

Monsanto and other agricultural biotech companies are also developing genetically engineered crops resistant to other herbicides .

孟山都和其他农业生物技术公司同时还正在开发对其他除草剂具备抗性的基因工程作物。