Both the free hydroxyl groups readily undergo esterification.两个自由羟基,都容易酯化.The chemical method include treating with sulfuric acid, saponification, acylation, esterification, etc.化学方法包括酸洗法 、 皂化法 、 酰化法和酯化法等.Iso - army gall...
他把手放在狗的胁腹上。He put his hand on the dog's flank.风暴正在来临, 所以渔民们受到迫在眉睫的危胁.As the storm was approaching, the fisher - men were threatened by dangers of the most perilous nature.他是那种当面胁肩谄笑.背地里造谣中伤的人.He was the kind of pers...
压缩空气的喷吐使飞机的左右和前后都能保持稳定。Jets of compressed air gave the aircraft lateral and directional stability.高高的烟囱 喷吐 出黑烟.Tall chimneys belch [ vomit ] forth black smoke.工厂的烟囱向空中喷吐着浓烟.The factory chimneys puff dense smoke into the ...
He lapsed into long silences or became offensively off-hand...他要么陷入长时间的沉默，要么变得简慢无礼。I thought his glance at me had been offensively bold.我觉得他对我的瞥视唐突无礼。He smelled offensively unwashed.他很脏,散发出难闻的气味.The group who had been sh...