to gain a high level of competence in English获得高水平的英语能力Teachers sometimes presuppose a fairly high level of knowledge by the students.教师有时候假定学生的知识水平相当高。a high-level programming language高级编程语言...
大多数塑料不易传热或导电.Most plastics do not readily conduct heat or electricity.铜导电比其它材料好.Copper conducts electricity better than other materials.导演不情愿降低半导体的导电率。The conductor is reluctant to reduce the conductivity of the semicond...