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襄樊市看小儿鼻窦炎价格咨询知识襄阳市四院治疗小儿鼾症哪家医院最好

2019年11月22日 13:15:55    日报  参与评论()人

襄阳中医院耳鼻喉科耳聋襄阳慢性咽喉炎那个能襄阳有啥专业的五官医院 Yael:Whats the matter, Don? You look worried.雅艾尔:发生什么事了,唐?你看起来很担忧。Don:Well, Yael, you know how people are always predicting that one day women will be able to have babies without men? It turns out that some species of the Whiptail lizard have figured out how to do this and completely eliminated the male sex.唐:嗯,雅艾尔,人们通常预测,如果有一天没有男人,女人也可以自己生孩子,你知道是怎么回事吗?事实明鞭尾蜥蜴已经做到这一点,并将雄性蜥蜴完全消灭掉了。Yael:You mean that the species is all female?雅艾尔:你是说所有的鞭尾蜥蜴都是雌性?Don:Exactly. The females have the ability to lay eggs that hatch and grow into healthy lizards without needing to be fertilized by a male. The offspring are exact and complete genetic duplicates of the mothers.唐:正是这样。雌性鞭尾蜥蜴能不通过受精就产卵并孵化出健康的小蜥蜴。而其后代的基因与母亲的基因完全一致。Yael:So the females are cloning themselves.雅艾尔:那么说雌性蜥蜴是在克隆自己。Don:Thats right. And if that werent enough, the female lizards take turns role-playing. They perform a mating ritual in which one lizard acts like the male, and the second lizard acts like the female. The ritual causes the lizard acting as the female to ovulate and lay her eggs. Then, a few weeks later, the two lizards switch roles and repeat this process so that the second female will be able to ovulate and lay her eggs.唐:说得对。如果那样还不够的话,雌性蜥蜴会轮流进行角色扮演。她们进行一个交配仪式,其中一个扮演雄性,另一个扮演雌性。这种仪式会引起扮演雌性角色的蜥蜴排卵并产卵。然后过几个星期,两只蜥蜴再交换角色,重复这种交配仪式,这样另一只雌蜥蜴就可以排卵,产卵了。Yael:That is strange.雅艾尔:太奇怪了。Don:And it raises a lot of interesting questions. For example, its not clear how well an all-female species can evolve and adapt to environmental changes. A species survival depends in part on variation among its members. If all the members of a species are identical, chances are greater that something like a change in the climate or a disease will wipe them all out.唐:这也引发了许多有趣的问题。例如,对于这种全雌物种如何更好地进化以适应环境变化目前还不清楚。一个物种的生存要部分依靠成员的变异。如果所有的成员基因都一模一样,那么一遇到气候变化或者灾害,她们全军覆没的机会就很大。Yael:So it might be a little early to do away with males.雅艾尔:所以排除雄性还为之过早。Don:Well, you know what they say. You cant live with them.唐:嗯,你知道她们是怎么说的。你没办法和他们一起生活。Yael:You cant live without them.雅艾尔:但你的生活不能没有他们。原文译文属!201207/189587襄阳第一人民医院鼻息肉治疗的价格

襄阳最好的治耳聋的医院襄樊耳喉医院耳喉在哪里 Acid Water酸雨What are you doing outside, Don? Its about to rain.Don你在干嘛呢?这天都快下雨啦!Im setting out bottles.我在放瓶子。I can see that. But why?我看得出来!你放瓶子有什么用呢?For my new business venture. Bottled rainwater!做新的投资啊。瓶装雨水!As in living plastic bottles out in the rain and then selling them as health drinks?就像这样子把生活塑料瓶放在雨中装雨水,然后再把它们当健康饮用水卖了?Exactly! What could be more pure and fresher than what straight from the heavens!一点不差!还有什么水比从天上直接降下来的水更纯净更新鲜呢!Maybe water from the a mountain stream!或许山泉水可以!You see any mount stream around here?那你在附近有看到山泉吗?Fine. But rainwater isnt exactly pure, Don. Its got a lot chemicals.好吧,是没有。但是雨水绝不是那么纯净的。雨水中有许多化学物质。Like what?比如说?Well, even without industrial pollution, atmospheric carbon dioxide dissolved into clouds makes rainwater at least slightly acidic.嗯……即使是没有工业污染,空气中的二氧化碳被云层吸收也会使雨水呈弱酸性。Oh!噢!But here in Indiana, a rain is almost ten times more acidic than natural rainwater.但是,我们印第安纳州雨水的酸性比天然雨水要高出整整十倍!Why?这又是为什么啊?Well, a lot of power plants and other factories that burn coal to make energy in this Midwestern state. Burning coal releases sulfur and nitrogen oxides into the atmosphere, which make rain more acidic.在这个中西部城市,有许多的发电厂和其他的工厂都是靠烧煤来产能的。煤燃烧时会产生硫和氧化氮,挥发到大气中,使这里的雨水呈较强的酸性。That does sound good! What would happen if you drag a rainwater?这个听起来确实很有道理!那如果人喝了这些酸性的雨水又会怎么样呢?Nothing! The acid content isn’t high enough to harm humans, and it doesn’t affect the taste of the water, either. But acid rain can damage lakes, streams, and harm trees at high elevations. Also, acid rain accelerates the decay of buildings, statues, and sculptures.那倒没事。雨水的酸含量不高,不会对人体造成什么伤害,也不会影响水的味道。但是,酸雨会影响湖泊,溪流,以及高海拔地区的树木植被。同时,酸雨还会加快建筑物,雕像,雕塑等的腐蚀。 /201212/216809襄樊市红十字医院看耳朵疾病哪家医院最好

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