我们都知道油脂变质后会发臭。We all know that fats spoil by becoming rancid.有些生物会导致食物变质并引起食物中毒。Some organisms are responsible for spoiling food and cause food poisoning.他们买了太多牛肉，有些都变质了。They bought so much beef that some went bad....
COLLABORATION: Groupware technologies such as discussions, chat sessions and project libraries.协作层: 群件技术,如讨论 、 交谈会话和项目库.The discussions were a prelude to the treaty.这些讨论是签订该条约的前奏.Objective: Discussions on the best approa...
The prevailing conditions in activated sludge may even promote the hatching of some helminth eggs.在活性污泥中,适宜的条件甚至可能刺激一些蠕虫卵的孵化.In addition , DEC is also apropriate for the quantitative examination of other helminth eggs in...
I didn't go in for poetry seriously , but now I'm beginning to take an interest in it.我平昔对诗歌很少研究, 现在开始感到一点兴趣了.All the geologists take an interest in ore materials.地质工作者都对一切矿物感兴趣.These pictures are familiar to a...