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....
The doctor knew that the wounded soldier's life was despaired of.医生知道那伤兵的生命已经无望.Most scientists despaired of ever knowing the physical nature of the stars.大多数科学对了解恒星的物理性质失去了信心.She stood at the corner of Main Street ...
...the hyperbole that portrays him as one of the greatest visionaries in the world.将他描绘成世界上最伟大的愿景家之一的夸张They are left-wing visionaries.他们是左翼空想家。One of the most celebrated visionaries is Maya Angelou.最著名的“预言家”这一是迈耶?安吉罗.Tru...