BUNa - N is a general purpose oil resistant polymer known as nitrile rubber.丁腈橡胶(BUNa-N )是一种多用途抗油品腐蚀聚合物,称为腈橡胶.Buna - N disc valves limited to 180 H temperatures.丁腈橡胶阀瓣阀门的温度限制在180℉以下.Ten thousand desperate fighting men, t...
a plea for clemency乞求开恩Perform meritorious service to atone for one's crimes so as to obtain clemency from the people.立功赎罪,以求得人民的宽恕.They addressed to the governor a plea for clemency.他们向州长提交了宽刑的申辨书....
索菲娅跳起身来，扔下正在织的毛衣。Sophia jumps up and throws down her knitting.我扔下他自己在市场上就一件衬衫讨价还价。I left him in the market haggling over the price of a shirt.木匠愤怒地扔下工具.The carpenter flung aside his tools in a rage....
我的男校友和女校友都出席了我的生日聚会.My alumni and alumna are present at my birthday party.假如玛莉和比尔从我们学校毕业的话, 那麽她就是女校友,而他则是男校友.If Mary and Bill graduate from our school, she is alumna and he is an alumnus.一小群男校友正在体育场停车场团聚.A little knot of...