Frogs eat pests which destroy crops and carry diseases.青蛙吃破坏庄稼、传播疾病的害虫。He doesn't spray against pests or diseases.他并不喷药防虫祛病。Rodents carry diseases and are generally regarded as pests.啮齿目动物传播疾病,常被当作害虫对待....
五是二十五的平方根.Five is the square root of 25.百分之九十五的屏幕都包含电脑制作的图象.95 percent of the screen contained images made by computers.每年需要移植器官的人又以约百分之十五的速度递增.The demand for transplantable organs is rising about 15 percent annually....