During alcoholic fermentation acetaldehyde acts as a hydrogen acceptor instead of oxygen.在这个过程中乙醛取代了氧作为氢的受体.Decanoyl acetaldehyde was extracted from houttuynia cordata thunb by the method of solvent extraction process.利用...
The pool had dried up and was full of bracken and reeds.水塘已经干涸，里面都是欧洲蕨和芦苇。The bracken was turning to the dusky gold of a fine autumn.欧洲蕨在晴朗的秋天正变为暗金色.In most news reports the name Margot Bracken figured prominently.大部分新闻报...
The philosophical problems of chance and of free will are closely related.或然性和自由意志这两个哲学问题是紧密相关的。Lewis has grown philosophical about life.对于生活，刘易斯变得豁达洒脱了。the philosophical writings of Kant康德的哲学论著...