We live in dread not only of unpleasant insects like spiders or wasps, but of quite harmless ones like moths.我们不仅生活在对象蜘蛛或黄蜂这样的小虫的惧怕中, 而且生活在对诸如飞蛾这样无害昆虫的惧怕中Bees and wasps both sting, but they have other similarities too.蜜蜂...
通常，绘画中暖色调为近感色，而冷色调为远感色。Generally, warm colours advance in painting and cold colours recede.如果孩子们在绘画中表现不出真实性,他们就会变得灰心丧气.Children can get frustrated when they are unable to achieve realism in their drawings.画家使他的绘画中的粗糙色调变得...
无论用什么标准来衡量，其条件都很简陋。The conditions are primitive by any standards.从那以后他们拆掉了简陋的棚屋。They have since knocked down the shack.往轻里说是住宿条件简陋。Accommodation was basic to say the least....
Diacetone acrylamide ( DAAm ) was prepared by reacting acrylonitrile with diacetone alcoholammonia.以二丙酮醇和丙烯腈为原料,利用简便、温和的反应条件合成新型乙烯基功能单体-双丙酮丙烯酰胺.PET fibres were grafted acrylonitrile ( AN ) initiated by benzoyl peroxide.以...