护照过期是无效的.A passport that is out of date is invalid.今天宇航员将会做最后一次尝试，力图把一颗通信卫星从无效的轨道上抢救下来。Astronauts will make a final attempt today to rescue a communications satellite from its useless orbit.此外，他们还声称任何这样的干预都是完全无效的。Further...
阿比·赫夫曼: 嗨, 你肯这样做很好.Abbie Hoffman : Hey, you're a good man for doing this . Good.阿比·赫夫曼: 伙计,讲一点关于战争的事.Abbie Hoffman : Tell us a little bit about the war, man.赫夫曼法官对那七个人宣判入狱.Judge Hoffman sentenced the seven men to pr...
British ministers continued to prevaricate.英国的大臣们仍然闪烁其词。She would prevaricate, but it would be in the line of her feelings at least.所以即使掩饰搪塞,她也得找个和她心情一致的借口.Tell us exactly what happened and do not prevaricate.有什麽就原原本本地告诉...
A model asphalt had been separated into four components: asphaltenes , saturates, aromatics and resins.用四组分法将沥青分为饱和分 、 芳香分、胶质、沥青质.The paper introduces the research on RHJ asphalt emulsifiers cations.介绍了RHJ型阳离子沥青乳化剂的研究过程....