这些做法对于植物的能育性常有损害,这一点是无可置疑的.That these processes are often injurious to the fertility of a plant cannot be doubted.这样的杂交随时都会发现有合理的间型能育性.Such crosses are found to be reasonably interfertile....
他死于结核性脑膜炎。He died of tubercular meningitis.他患病毒性脑膜炎.He is suffering from viral meningitis.各种病毒性因子可引起无菌性脑膜炎或脑膜脑炎.A variety of viral agents cause aseptic meningitis or meningoencephalitis....
a crusty old man脾气暴躁的老人As he grew old, he turned into a crusty Confucian moralist.大概他上了年纪以后, 才成了讲道德说仁义的顽固人物. ”She means well, but is very crusty and queer now.她的心眼不错, 不过这阵,她可很能唠叨,很古怪....