昆虫生产的防御性化学物质,其种类之多不可胜数.There seems to be no limit to the variety of defensive chemicals produced by insects.防御性的刺长在这些讨人厌的生物背上.Defensive quills dot the backs of these troublesome creatures.现在大家偏好偏防御性的品种.It is now preferre...
He is a fervid orator.他是个慷慨激昂的演说者。Question was asked of Demosthenes; what was the chief part of an orator?有人问德冒斯尼斯, 一位演说家最主要的才能是 什么 ?He excels as an orator.他是一个出色的演说家。He was so eloquent that he cut down the finest orator...