1. The herbicide might damage populations of certain rare plant species that the lake contains. 除草剂可能会破坏湖泊中某些稀有植物的种群。
2. Soybeans and corn are not sown together in the same filed; nevertheless, most farmers are reluctant to use the herbicide on their corn. 大豆和玉米不是在同一块地里播种的；然而，大多数农民不愿意在他们的玉米上使用除草剂。
3. One very effective herbicide is safe for corn, but soybeans are damaged even by the herbicide's residue, which remains in the soil more than a year after the herbicide is applied. 某种非常有效的除草剂对玉米来说是安全的，但即使是除草剂的残留物也会对大豆造成损害，该残留物在施用除草剂一年多后仍残留在土壤中。
4. In order to eliminate the weed, biologists proposed treating infested parts of the lake with a certain herbicide that is nontoxic for humans and aquatic animals. 为了消除这种杂草，生物学家建议用某种对人类和水生动物无毒的除草剂来处理受感染的部分湖泊。
5. Sulfonylurea herbicide Rimsulfuron was synthesized by a five-step reaction. 经五步反应合成得到磺酰脲类除草剂玉嘧磺隆。
