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....
对个人隐私的非法侵犯an impermissible invasion of privacy他对个人安危全然无所顾忌。He showed a reckless disregard for his own safety.对个人荣誉的渴望驱动着他们.They are driven by a craving for personal glory....