It is a very pretty butterfly, with a 2 inch wing span.这是一只非常美丽的蝴蝶，翼展2英寸。She's like a butterfly. She flits in and out of people's lives.她像一只蝴蝶，每天在人前人后飞来飞去。the life cycle of the butterfly蝴蝶的生活周期...
He drove on, apparently unconcerned about the noise the engine was making.他继续驾车前进，对发动机发出的噪声显然毫不在意。He seems totally unconcerned by real dangers.他对于真实的危险似乎全然不在乎。The report is unconcerned with details.报告未涉及细节。Paul was uncon...
He was a major influence in converting Godwin to political radicalism.戈德温变成政治激进主义者主要是受他的影响。Then he composed his features, took Godwin's hand awkwardly and began to usher him from the office.然后他定了定神，尴尬地牵着戈德温的手，开始引领他离...
脆性往往是合金化的一种结果.Brittleness is often a result of alloying.表面涂敷技术分为两个主要类型: 脆性涂层和光弹性涂层.Surface - coating techniques may be classified into two major types: brittle coatings and photoelastic coatings.研究裂纹技术应用于分离脆性块体的分离理论和分离方法...