单词：preservative activity
preservative activity的用法和样例：
例句
- Salt has a preservative effect on food.盐对食物有防腐作用。
单词：preservative activity 相关文章
The House of Representatives passed a bill today designed to deal with the housing crisis. It would authorize the Treasury Department to give unlimited credit to Freddie Mac and Fannie Mae for 18 months to keep the mortgage giants from collapsing. D
2008年NPR美国国家公共电台七月
Youve just opened a bottle of wine for dinner. On the label, you see these words: Contains Sulfites. What are sulfites? And what are they doing in your wine? 设想一下，你在晚餐时刚刚打开了一瓶酒，你会在酒瓶的标签上看到：含
2018年NPR美国国家公共电台2月
Cambridge 8 TEST 4 1. middle-year education=lower secondary school 中学2. format=pattern n.格式 3. less successful student=struggler 差等生4. key=contributing factor=important=major=significant=critical n.关键5. achievement=attainment=progre
雅思英语
This is Scientific America's Sixty-Second-Science. I am Steve Mirsky. Got a minute? Some interesting electrical activity in the clouds of ash drifting around Europe as a result of that Icelandic volcano. Models predicted that electrical charge should
Scientific American(五)月
Time is a friend of food, and also its enemy. 时间是食物的挚友，时间也是食物的死敌。 New technologies can help preserve food, while traditional preservative techniques may create different, 为了保存食物，我们虽然已经拥有
舌尖上的中国第一季
What Are Sulfites? Youve just opened a bottle of wine for dinner. On the label, you see these words: Contains Sulfites. What are sulfites? And what are they doing in your wine? 图片1 Chemical Compounds Sulfites are chemical compounds found naturall
英语听力文摘 English Digest
HEALTH REPORT - New Studies Aim to Expand Knowledge of AutismBy Caty Weaver Broadcast: Wednesday, September 27, 2006 This is the VOA Special English Health Report. A young child with autism Scientists
2006年慢速英语（九）月
Republican Senator Judd Gregg of New Hampshire is the latest Obama administration appointee to abruptly pull his name out of contention. In a statement issued late today, Gregg cited what he termed irresolvable conflicts with the President's handlin
2009年NPR美国国家公共电台2月
206. The spinal cord operation脊髓手术 spectra-sponge There was a lecture given at a medical school on a spinal cord operation. The professor began: In order to have a speedy but safe operation, one must speculate on the entire spectrum of possib
胡敏托福词汇记单词
176. The greatest hunter最伟大的猎手 preoccupation-primate It is neither presumptuous nor pretentious of me to claim that I am one of the greatest hunters that has ever lived. It is not the sort of greatness with which one presumably has the pr
胡敏托福词汇记单词
Autism spectrum disorder is a complex neurological disorder that affects a person's ability to communicate and interact with others. For decades some parents, researchers and doctors have debated a possible link between autism and vaccines that conta
VOA标准英语2010年(三月)
Science and Technology Allergy to wine The oenophile's lament 科技 红酒过敏 酒鬼们的烦恼 An explanation for a most unfortunate condition 这件不幸的事现在有解释了 ONE of lifes sadder statistics is that about 8% of people get sn
经济学人科技系列
Pride and Prejudice by Jane Austen Chapter 22 The Bennets were engaged to dine with the Lucases and again during the chief of the day was Miss Lucas so kind as to listen to Mr. Collins. Elizabeth took an opportunity of thanking her. It keeps him in g
有声英语文学名著
Science and technology 科学和技术 Allergy to wine 红酒过敏 The oenophile's lament 酒鬼们的烦恼 An explanation for a most unfortunate condition. 这件不幸的事现在有解释了。 ONE of lifes sadder statistics is that about 8% of
经济学人科技系列
For as long as people have been drinking too much, they have been searching for a cure for that dreaded morning after hangover. 只要一个人有过酩酊大醉的时候，他们就一定曾寻找过解决宿醉之后可怕的第二天清晨。 Raw
阅读空间
By Carol Pearson Washington 17 October 2009 A girl receives an H1N1 vaccination Countries in the northern hemisphere are starting to distribute the H1N1 flu vaccine as part of a massive immunization program against the viral pandemic. Parents and so
VOA标准英语2009年(十月)
In Gesell's story, unlike Fisher's, storing wealth requires considerable effort and ingenuity. 在格塞尔的故事中，不同于费雪的是，储存财富需要巨大的努力和心灵手巧。 Meat must be cured. 肉必须加以处理。 Wheat m
经济学人财经系列
Leave it on the shelf too long and honey begins to crystallize. Heating the honey returns it to its original condition, but if you add water, you could ruin the honey completely. Thats because honey, which is a preservative in its original state, fer
英语时差8，16
So because of its high sugar concentration, pure honey will never ferment or go bad. It may crystallize but by soaking the jar in hot water you can turn it back into a liquid. Adding water, however, lowers the concentration of sugar in the honey and
英语时差8，16
Other parents fret about thimerosal, a preservative that contains trace amounts of mercury. Not only were these amounts minute and safe, but thimerasol has now been eliminated from all vaccines, with the exception of multi-dose flu shots. Often these
经济学人综合