Do bear in mind, though, that at this time of year the weather is very changeable and if the cloud suddenly descends, it's all too easy to wander off the track.
但是要记住，每年的这个时候天气变化无常，如果乌云突然降落，就很容易偏离轨道。
Early in his research, Kramer found that caged migratory birds became very restless at about the time they would normally have begun migration in the wild.
在克雷默早期的研究中，他发现被关在笼中的候鸟在它们通常开始在迁徙的大致时间会变得非常不安。
Just at that time, the emperor was ill and he became very weak.
就在那时，皇帝病了，变得非常虚弱。
They are interesting for the fact that they are very plain and undecorated for the time, with only one plain central panel at the back and no armrests.
很有趣的是，当时它们很普通，没有装饰，只是后面有一个简单的中央面板，没有扶手。
It's a very important explanation and much debated, that at a critical time in the battle, one technique would be that one side would give one great big shove.
它是一种很重要的解释，而且饱受争议，那就是在战局一个重要的时刻，有一项技术就是一方给对方致命一推。
He saw that another small private art school where all the students were women was very popular at that time.
他想到了当时另外一所声誉不错的小型私立艺术学校，里面都是女性学生。
I believe that people should take time to relax with hobbies or activities that are very different from what they do at work.
我认为，有时候人们应该通过业余爱好或与工作截然不同的活动来放松自己。
Around me in this picture are the things that were very important in my life at that time: toy cars and planes.
在这张照片里，我周围都是当时我生活中非常重要的东西：玩具汽车和玩具飞机。
At that time Lindsay wanted very much to work at Fun Kids, a radio station for young listeners, so she sent them a strange recording, hoping to be accepted.
当时琳赛非常想在 Fun Kids 工作，那是一家面向年轻听众的广播电台，所以她给他们发了一份奇怪的录音，希望能被录用。
I'm hands-on with them every day at the zoo, and I do look back very fondly on the time that we had them.
我每天都在动物园里和它们亲昵玩耍，而且我的确深深地怀念那段曾拥有它们的时光。
The very first Federal Duck Stamp was designed by J.N. "Ding" Darling, a political cartoonist from Des Moines, Iowa, who at that time was appointed by President Franklin Roosevelt as Director of the Bureau of Biological Survey.
最早的联邦鸭票是由J.N.“丁”·达林设计的，他是爱荷华州得梅因市的一位政治漫画家，当时被富兰克林·罗斯福总统任命为生物调查局局长。
That might seem a long way removed from where we're at, but there are vertebrates that live a very, very long time.
这对我们来说，也许看起来就是一段很长的生命之路了，但也确存在有存活时间很长很长的脊椎动物。
There were very few vehicles on the country roads at that time of the morning and Sam knew how to get to the market very well.
清晨的那个时候，村里的路上没有多少车，而且萨姆对去市场的路很熟悉。
Adrenal gland cancers (adrenal cortical cancer) are rare tumors that are usually very large at the time of diagnosis.
肾上腺癌(肾上腺皮质癌)是一种罕见的癌症，一般诊断出患有肾上腺癌的时候肿瘤的体积已经很大。
You can assume that at any time after the initial very fast process of getting equilibrium.
你可以设想在初始的很快，达到平衡的过程以后的任何时间。
But if someone handed the books to you one at a time, you might conclude very strongly that you're in the Fantasy section.
但是，如果有人把这三本书一本一本地递给你，你会非常肯定地得出结论说自己身在奇幻类图书区。
I did not have time to ponder this question. At that very moment the crane entered the scene.
我没有时间仔细思考这个问题，因为就在这时一辆起重机进入了我的视线。
This measure was not directed specially against me, but was a very usual procedure at that time.
这一措施并不是有意针对我，但是在当时却是一项极为普遍的手段。
He was very young at that time. Instead of firing back, I just posted further explanations.
其时他还很年轻，我没有予以反驳，而只是作出一些补充说明。
Protein was discovered in 1839. At that time it was considered to be a very important nutrient.
蛋白质是1839年被发现的，它在当时被视为非常重要的营养素。
And the city's lights come on at a time that the atmosphere could very well do without them: when it is cleansing itself of the pollution of the day.
夜晚，城市上空的大气在忙于清除它白天所受到的污染。本来这项工作会很有成效，但这时这座城市的灯光亮了起来，工作受到了干扰。
Realize that very few people, if any, with a long list of bad habits can change that entire list at one time.
要知道，那些有着长长的坏习惯列表的人中，即使有的话也是极少数能一次改掉所有。
Feeling like you're floating through a cosmic wonderland might be exciting for a while, but doing that for weeks at a time can be very unsettling.
想象下自己飞梭在美妙的宇宙中，也许你会兴奋一阵子，但是如果一次就让你持续数周时间会令你深感不安。
Contributed actions are very like AOP, except that they happen at run-time not compile time.
认担动作很像AOP，只不过它是发生在运行时，而不是编译时。
According to Frank Dunphy, Mr Hirst's business manager at the time, the galleries that represent him were very unhappy.
根据时任赫斯特先生的经纪人弗兰克·邓菲所讲，代表赫斯特的画廊当时非常不高兴。
These are the sorts of things that we're very good at addressing over time.
随着时间的过去，我们非常善于解决这些类型的问题。
Having said that, at the time, I was very enthusiastic about Sapporo's plan (and I still am) -- it was a huge step forward in proving that we can grow stuff in space.
如同我说过的，当时我对七宝啤酒的计划非常非常地热衷（现在我仍然感兴趣）——因为这证明我们在太空培植农作物方面有了巨大的进步。
At that time public health and medical scientists had very little idea of what was happening until it was too late.
当时，公共卫生和医学科学家对发生的事情了解很少，后来就太晚了。
At that time public health and medical scientists had very little idea of what was happening until it was too late.
当时，公共卫生和医学科学家对发生的事情了解很少，后来就太晚了。
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