由二苯并-1,3-二氧杂 - 环辛烷 -2- 羧酸经两步反应制得, 总收率70%. It was prepared by the reaction of 12 H - dibenzo [ d , g ] [ 1,3 ] dioxocin - 6 - carboxylic acid with acetoxime.
…a popular advertising industry practice of using performers to tout products…广告业常用的利用艺人来兜售产品的做法It was a lie, tout court.那只不过是谎言。J'enjambai le banc et je m'assis tout de suite à mon pupitre.我跨过凳子,马上坐到座位上.C ...
...a pretty twenty-year-old girl.20岁的漂亮姑娘Pretty sure. The bank always notifies us promptly when transfers are made.很肯定. 银行在收到转帐汇票时,总是马上通知我们.I'm a pretty good judge of men. If you're honest and on the up and up,...
大街的两旁种着蓝花楹，绽放的花朵汇成一片紫色的海洋。The avenues lined with jacaranda trees burst into a carnival of purple.地址为华盛顿特区，西北区，M大街2025号，邮政编码20036。The address is 2025 M Street, Northwest, Washington, DC, 20036.我们沿着艾维格大街一路飞奔到汽车那儿。We belted...
解释为什么钡能形成过氧化物而铍则不能。Explain why barium forms peroxide but beryllium does not.普通的陶瓷元件分别是钛酸钡和锆钛酸铅.Common ceramic elements are barium titanate and lead zirconate - titanate.钡剂反流进入回肠末端.There is reflux of barium into the termi...
He was unable to prevent a look of interest from flitting across his features...他脸上忍不住掠过一丝感兴趣的神色。The few night - flitting things - bats, moths, owls - were vigorous in the warm darkness.少数夜游的动物 —— 蝙蝠, 蛾子, 猫头鹰 —— 在温暖的黑暗中非...