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泉州妇科医院哪个好度排名搜病网

楼主:度排名快对话网 时间:2019年09月17日 04:54:01 点击:0 回复:0
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The Smell of Dirt泥土的芬芳A lot of people love that fresh-dirt smell. The surprising thing, though, is that it isn’t coming from the dirt itself.不少人喜欢闻新鲜泥土的芬芳,出人意料的是芬芳不是来自泥土本身,Microbiologists have traced the pleasant odor to an organic chemical called “ geosmin“.”微生物学家寻根溯源,发现宜人的香味是来自有机化学物:土臭素。No way! But how does geosmin get into dirt?这不可能!土臭素怎么钻进泥土的呢?A microbial geneticist named Keith Chater at the John Innes Center in England has traced geosmin down to a common bacterium called Streptomyces coelicolor.Keith Chater 是英国John Innes中心的一名微生物遗传学者,他发现一种常见的叫蓝色链霉菌的细菌可以分泌土臭素。He even found out exactly which gene in the little critters causes them to produce geosmin.他甚至还能确定蓝色链霉菌中哪种基因产生土臭素。No way! A bacterium is producing the chemical that smells so good?没可能啊!细菌能分泌好闻的化学物质?Interestingly enough, there are unconfirmed reports that animals are attracted to fresh dirt in the desert, and go there looking for water.有趣的还不止这个,有报道还称沙漠动物就是靠新鲜泥土的芬芳寻找水源,不过有待考。As they nose around the dirt, they pick up plenty of S. coelicolor,动物们找寻绿洲的同时,成为大量蓝色链霉菌的媒介,which then hitch a ride from one oasis to the next.搭载蓝色链霉菌游曳绿洲间。If it’s true, then the bacteria in general may create the odor in order to attract animals.如果蓝色链霉菌普遍散发香气吸引动物,The animals find water, the bacteria are sp, and everyone is happy.动物寻找到水源;而蓝色链霉菌也能因此繁衍,这不是双赢吗? /201212/213610Lightning Helps Fertilize The Soil闪电有助于肥沃土壤Our bodies need protein, and proteins contain nitrogen. The air we breathe has plenty of nitrogen to satisfy our needs.人体需要蛋白质,蛋白质中含有氮元素。我们呼吸的空气中有许多可以满足我们需求的氮,But—that nitrogen is not available to us directly from the air.但我们无法直接从空气中汲取氮,The only way we can get nitrogen is from the plants we eat, or from the animals we eat that eat the plants.我们获得氮元素的唯一方法就是通过我们吃的植物或是以植物为食的动物中获得。Heres The Problem:问题出现了:A nitrogenmolecule in the air consists of two atoms which are held together very tightly.空气中的氮气分子是由两个连接紧密的氮原子组成,In order for us to absorb nitrogen, the two atoms must be separated.要吸收氮元素就必须将两个原子拆开,But the two atoms are held together so tightly that our body chemistry does not have enough energy to process them.但是人体内产生的化学能并不足以打破如此紧密的连接。This is where lightning comes in. Obviously we dont have to be struck by lighting in order to satisfy our need for nitrogen!这时候,闪电就有用武之地了。很显然的事,我们不需要为了满足对氮元素的需求而去遭电击。However, in a thunderstorm there is enough electrical energy in lightning to separate the nitrogen atoms in the air.但是,狂风暴雨中的闪电释放的能量足以拆散空气中的氮原子,Once the atoms are separated they can fall to earth with rain water,被打散的氮原子随着雨水落入泥土,and combine with minerals in the soil to form nitrates, a type of fertilizer.与泥土中的无机物相结合形成硝酸盐(可作为肥料)。The nitrogen-containing nitrates in the soil are absorbed by the plants,泥土里含氮的硝酸盐会被植物吸收,and when we eat the plants or the animals which eat the plants, we get the nitrogen in a form which our bodies can use.当我们吃到这些植物,或者吃到以这些植物为食的动物时,我们就能以身体可吸收的形式获得氮元素了。So, in addition to providing a spectacular light show, and scaring us to death, lightning also helps fertilize the soil.所以,闪电除了能展现电闪雷鸣的壮观景象和把我们吓坏来之外,还能有助于肥沃土壤。 /201207/190270Dear Annie: My sister and her husband have some habits that really turn me off when I visit. They leave dirty pots and pans on the stove for weeks. They allow used dishes, cups and utensils to pile up in the sink until it is overflowing. They have a dishwasher, but say it doesnt clean the pots very well.亲爱的安妮:上次去家做客,她和夫的一些生活习惯真的让我不敢苟同。他们把脏壶,脏锅扔在炉灶上,几个星期不洗。把用过的盘子,杯子,器皿堆在洗碗池里,直到堆满为止。他们有一个洗碗机,据说用它洗不干净碗。When their kitchen trash can is full, it is pulled out from its spot and placed in the middle of the floor. From there, it becomes a trial of wills to see who will give in and take the trash out.厨房垃圾桶满了,就把它从原地挪到屋子中间。在这里会上演一场意志力的比拼,看谁会屈,把垃圾倒掉。They apparently do not care about the health issues of all their bad habits. It is not like they are pressed for time to get these things done, as both are retired.很明显他们不关心坏习惯给健康带来的问题。因为两人都退休在家,不可能因为赶时间而不做家务。If anything is mentioned to them about the dirty dishes or overflowing garbage, they get angry and defensive. Other than not visiting or eating out every night, what do I do? - Disgusted in California如果当面提到脏盘子,或者堆积的垃圾,他们就会生气,开始为自己辩解。除了不去拜访,或者晚上出去吃饭之外,我还可以怎么做呢? Dear Disgusted: Your sister and her husband seem to be content with their level of cleanliness. Consider staying at a motel, or buy groceries and cook your own meals. If you are close enough to be an overnight guest, you should also pitch in and help by washing a few dishes and emptying the overflowing garbage.你的,夫似乎很满意他们的卫生水平。你可以考虑住汽车旅馆,或者自己买菜做饭。如果你们关系足够亲密,会留宿的话,你应该尽量帮忙洗盘子倒垃圾。201205/183146

How do you define poverty? How do you quantify that?你如何定义贫穷?你会如何量化它呢?Its a great question. Its hard to quantify depends where you live, what your situation is, how many kids you have, all that. Its a gray area. But we went out here in New York and ask some folks on the streets, just to get a sense of what they think a family of four has to make to fall below that poverty line. Take a listen to their wide range of answers.这个问题很好。很难将它量化,这得基于你所在的地区,家庭情况,有几个孩子,所有这些都得考虑。但是我们出去到纽约大街上问问当地人,问问他们如何看待一个四口之家的贫困标准。听听他们五花八门的回答吧。I would say anything less than 60,000 dollars a year would be poverty for a family of four.我想说,一个四口之家年收入少于6万美元就算作贫穷。Income probably 40,000, 45,000 dollars a year.年收入大概四万至四万五美元。I would say 15,000 to 20,000.我觉得是一万五至两万。I think a family making 80,000 dollars for a family of four is below poverty line.我认为一个四口之家年收入八万美元仍然处于贫困线下。You see, all over the board there, the actual answer, Brook, this shocked me. 22,050 dollars a year for a family of four. Thats according to the number when you look at Medicaid, welfare, food stamps. That is what goes into determining what benefits people get that fall below the poverty line.你看,各种各样的说法,实际的让我很震惊。年收入低于22,050美元的四口之家处于贫困线下。这是根据年的数据,包括医疗补助、福利和食品券在内的数据。人们的收益也是决定他们是否处于贫困线下所要考虑到的因素。The formula hasnt changed in 40 years no matter how the economy has changed, no matter how the job picture has changed. I doesnt factor in critical expenses like housing and your medical expenses until the Obama administration has just announced their development in new way to look at poverty. And its gonna include those essentials. Heres why they say its so important. Take a listen.无论经济如何改变,无论劳动市场如何改变,这种准则在40年内从未改变过。我没有将关键性的因素,例如住房和医疗费用纳入考虑范围,直到奥巴马政府公布的最新的看待贫穷的方式。其中包含这些必要条件。这里将讲述他们为什么觉得这很重要。听听他们是怎么说的。The administration has basically proposed to produce a supplementary poverty measure that will be produced next to the official measure, and will not replace it anyway, but will give us a second lens, another way to look at some of these issues.政府已经建议制定一个定义贫困的补充法案,那将附加在官方规定之后,且无论如何不能替换,但这会为我们提供看待贫困问题的第二种视角。原文译文属!201208/197521

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