所加的反应物可以是二烯烃 、 环二烯烃.The feed reactants can be alkadienes, cycloalkadienes.包含两个双键的化合物叫做二烯烃.Compounds containing two double bonds are called dienes.与二烯烃橡胶相比, EPDM的双键很少.Compared with diolefine rubber, EPDM has less double b...
They were each blindfolded with big red handkerchiefs.他们每个人的眼睛都被一块红色大手巾蒙住了.His abductors blindfolded him and drove him to a flat in southern Beirut...绑架者把他的眼睛蒙起来，并开车把他带到了贝鲁特南部的一处公寓。The report says prisoners were often ke...
This is a lyrical work written with the authority and assuredness of an experienced writer.这部抒情作品由一位有经验的作家以老练、自信的笔触写成。Clinging to outside sources indicates a lack of assuredness inwardly.依赖于外部情报源,表明你缺乏内在的确信.Life is happi...
He's a very likable fellow.他是个非常可爱的人.In fact, I found him personally likable, if irresponsibly impulsive.说实在的, 我发现,这个人还很可爱, 虽然有些不负责任地过于任性了.Pam was likable and pretty.帕姆又漂亮又可爱....
He did not object.他没有反对。In the squares place a penny, nickel, dime and quarter in that order. The object is to reverse the order of these coins...在这些方块中按顺序放置1分、5分、10分和25分的硬币各一枚。目标是颠倒这些硬币的顺序。Under the integrated systemati...