襄阳市襄州区人民医院耳膜穿孔好吗ask典范

来源:搜狐娱乐
原标题: 襄阳市襄州区人民医院耳膜穿孔好吗当当门户

When human females are pregnant, theyre advised to stay away from alcohol, for fear of harming the fetus.当人类女性怀时,人们就会建议她们戒酒,以免伤害胎儿。And most parents refrain from giving their infants bottles full of whiskey or beer, for obvious reasons.大多数父母都不会给婴儿接触满瓶的威士忌或者啤酒,原因是显而易见的。But if youre a fruit fly, literally dousing your offspring in alcohol is apparently one of the best ways to protect them from danger, particularly from certain types of wasps.但如果你是一只果蝇,毫不夸张的说,你把后代浸没在酒精中是保护它们远离危险的最好办法之一,特别是这样能避免黄蜂的伤害。How and why?如何以及为什么要这样做?Lets back up a bit.让我们来回顾一下。First, certain types of wasps prey on fruit flies by injecting eggs inside fruit fly larvae.首先,特定类型的黄蜂会将卵注入果蝇幼虫中,以捕食果蝇。Unless an infected larva kills the wasp egg, it hatches and the wasp larva eats its way out from inside the fruit fly larva, killing it.除非受感染的果蝇幼虫杀死黄蜂卵,否则当黄蜂卵孵化出来后,黄蜂幼虫将会由内而外吞噬果蝇幼虫,将其杀死。One way for fruit fly moms to protect against this gruesome fate is to lay their eggs in an alcohol soaked environment, such as fermenting fruit, when they see that parasitic wasps are around.果蝇妈妈为防止幼虫遭受厄运的其中一种办法是,当看到寄生蜂的出现时,将卵产在酒精浸泡的环境之中,例如发酵的水果里。Although alcohol is toxic to fruit flies, its even more toxic to wasps, which, unlike fruit flies, have not evolved a high level of alcohol tolerance.尽管酒精对果蝇有毒,但酒精对黄蜂的毒性更大。与果蝇不同,黄蜂还没有进化成对高浓度酒精的耐受性。So if the larvae eat enough alcohol rich food, it can kill the wasp egg and keep it from hatching.所以如果果蝇幼虫吃了足够富含酒精的食物后,它就可以杀死黄蜂卵并使之不能孵化。Apparently, fruit flies are not the only fly species to use alcohol to protect their young.很明显,果蝇并不是利用酒精来保护幼虫的唯一的蝇类。In fact, it seems that most flies that eat rotting fruit use the alcohol defense against wasps.实际上,大部分的苍蝇都会食用腐烂水果,利用酒精来防御黄蜂。So fruit flies are not unique in this regard, but theyre still mighty impressive.所以果蝇在这方面并不独特,但它们仍然令人印象深刻。 /201311/265286Why does salt melt ice?为什么食盐能让冰块融化?It lowers the melting and freezing point of water.是因为食盐将水的熔点和冰点降低了。Oh,OK.Wait,I dont get it. Doesnt that mean the salt make ice colder?等一下,我不明白。这就意味着食盐让冰的温度变得更低吗?Let me explain.Pure water freezes at thirty-two degrees Fahrenheit,right?我解释一下。纯净水的冰点是32华氏度,对吧?At that temperature we can say that the rate of freezing is the same as the rate of melting.这个温度既是冰点也是熔点。So in other words, at waters freezing point theres a sort of equilibrium between freezing and melting.也就是说,水的冰点就是结冰和融化的平衡。Right.Throwing salt on ice upsets the balance.是的。在冰上洒盐扰乱了这种平衡。Upsets it how?怎么打乱的呢?The salt dissolves into the liquid water, which means that some of the water molecules are replaced by salt.盐溶解在水中,就是说一部分水分子被盐取代了。Since there are now fewer liquid water molecules to be captured and frozen by the ice, the rate of freezing drops.既然结冰的液态水分子减少了,冰点自然降低了。I think I get it.And Since the rate of melting stays the same, theres more melting going on than freezing.我明白了。水的熔点不变,融化的水分子比结冰的多,And so the ice melts.所以冰块就融化了。Right.Interesting.对。很有趣。In fact, anything that dissolves in water will do the trick.其实,任何溶于水的物质都可以使冰融化。You could pour sugar on ice and it will melt.把糖洒在冰上,冰也会融化。But I guess since salt is cheaper its used more often.但是我想也许由于盐比较便宜,所以经常被使用。 201405/301828

Its time just to find out what the fox says.是时候揭晓狐狸是怎么叫的Please welcome all the way from Norway.请大家欢迎来自挪威的Ylvis everybody.Oh,you dont know how excited I am that youre both here.ylvis 你们不知道你们俩都来了 我有多激动Okay. Whos Buard,whos Beguard?谁是buard 谁是beguardIm Buard,hes Veguard. you are...Buard and Veguard,yeah.我是buard,他是veguard,你是 buard 和veguard啊 是的And do you...youre brothers?And do you have other siblings?Yeah,we have one.你们是两兄弟吗 你们还有其它兄弟吗 有一个兄弟Hes actually flying helicopters in Portland.他在波兰当直升机飞行员Oh,he lives in Portland. yeah.Its not faraway. I see.他住在波兰啊 是的 也不是很远 确实 明白了Well, and does he sing as well?Im sure he does. he does sing.那他也唱歌吗 确实他也唱歌他也唱Not like this ,but he does sing. right.确实是的 不过不像我们一样唱 好的So you did this... you have a variety show in Norway right?你们在挪威有一个节目对吧Yeah, is that a variety show or talk show?Its a talk show.是综艺节目还是脱口秀是脱口秀Its mainly... a talk show. its a talk show.主要是 脱口秀Weve done some variety shows and stage shows.我们也做一些综艺节目和舞台秀But this whole was part of our talk show. ok.这个视频也是我们节目的一个环节So this was...youve been on two years,这是你们的 你们的节目播出两季了and this was to launch your third season right?thats right.这是你们的第三季 是的And you purposely try to make it bad你们有意把这个视频做成这样and look what youve done,did you try... I mean看看你们的杰作 你们是 我是说that was the intention right?Its...那就是你们想要的效果 其实Its a funny story. because we...this is ...its actually a favor,其实有点搞笑 这是请别人帮忙做的cause the guys helped us produced it,因为帮我们制作的那些人thats a production team called Stargate, and theyre Norwegians,他们是一个团队 挪威的一个团队and theyve like made big hits,他们做过一些很流行单曲Beyonce,Rhianna and whatnot. yeah.像Beyonce、Rhianna的啦 等等 恩And they asked us to do them a favor.他们曾经请我们帮过忙And we asked them to do us a favor in return.然后我们反过来请他们帮个忙So we thought okay.我们就像 那如果是这样的话If we give them a crap idea.我们何不想个很烂的点子注:EllenShow中英字幕来源于:艾伦秀字幕组 /201311/264685

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