Manufacturers are working on a new generation of cheaper digital radios.制造商正在研制价格更便宜的新一代数字收音机。Clock-radios blast away until you get up.收音机闹钟会一直响到你起床为止。Radios are not permitted in the library.图书馆内不许使用收音机。...
The cercospora leaf spot is one of the main diseases infecting sugarbeet.褐斑病是甜菜的主要病害之一,危害性很大.The results show that the Heihe region Cercospora Race greater the number and frequency changes.结果表明黑河地区灰斑病生理小种数目和频率有较大变化....