Dr. Williams instructs us in botany.威廉博士教我们植物学.The first of these in the field of botany were the herbals.在植物学领域,这些最早的著作是本草书.Medicine began to turn away from botany in the scientific revolution of the 17th and 18th centu...
Until today germanium is the present substance on earth with no exception.直至今天锗才毫无异议地成为地球上是纯净的物质.Doped silicon and germanium are technologically the most important types of semiconducting material.添加硅和锗在工艺上是半导体物质中最重要的类型....
Her burst of exuberance and her brightness overwhelmed me.她勃发的热情和阳光的性格征服了我。An astronomer can determine the brightness of each star.天文学家能够测定每颗恒星的亮度。You'll be impressed with the brightness and the beauty of the colors...