聚丙烯腈不溶于丙烯腈.Polyacrylonitrile is insoluble in acrylonitrile.方法采用大鼠呼吸道静吸入染毒方法研究丙烯腈对大鼠血液的毒性.Method Rats were made to inhale acrylonitrile in static enclosure cabinet.有机氰化物, 如乙腈 、 丙烯腈 、 正丁腈等.Organic cyanide, like methyl cyan...
有时候要到达谷底，才会慢慢变好。Sometimes things have to fall apart to make way for better things.你一定注意到他有时候显得特别疲惫。You must have noticed how tired he sometimes looks.“嗯，”他承认道，“我有时候说话的确有点吐字不清。”"Well," he conceded, "I do sometimes mumble ...
Some of the companies illegally sent the wherewithal for making chemical weapons.有些公司非法为制造化学武器提供所需的资金和设备等。People who work illegally are liable to Prosecution and deportation.凡非法工作的人都有可能被告发并驱逐出境.The landlady found they ha...
他做了这道算术题,但答案错了.He did the sum but got the wrong answer / got the answer wrong.我看见他正在苦心思索一道算术题.I saw him puzzle over an arithmetic problem.我们班布置了十道算术题作为作业.Our class has ten arithmetic problems for homework....