It only lasted a couple of years, as far as I know.
据我所知，它仅维持了几年。
I guess after two years of doing that I suppose I felt, you know, I know I can do this well and now I want to do something else that's a little different.
我想在做了两年之后，我觉得，你我都知道我能做得很好，现在我想做一些不同的事情。
We don't know for sure how much mass our Sun's lost over the last four billion years.
我们不知道我们的太阳在过去的40亿年里损失了多少质量。
Do you remember all years when scientists argued that smoking would kill us but the doubters insisted that we didn't know for sure?
还记得那些年吗？当初，科学家提出吸烟会导致死亡，而怀疑者们却坚持认为我们还不能确认这一点。
Human curiosity demands that we know actual age in years.
人类的好奇心驱使我们了解实际年龄。
Don't I know how old she is; eight years old and ignorant of everything.
我不知道她多大了吗？八岁，什么都不懂。
I know that you've been studying chimpanzees for thirty years now.
我知道你研究黑猩猩至今已有30年了。
I've known him for years, but I still don't know what pushes his buttons.
我已认识他多年，可还是摸不透他的脾气。
These guys know their stuff after seven years of war.
这些家伙在7年的战争之后便懂行了。
Despite graduating into the best economy in the past 50 years, Gen Zs know what an economic train wreck looks like.
尽管毕业的时期是过去50年来经济最好的，但Z代人都了解经济列车崩溃的样子。
Little did she know that, over the years, the husband has been trying all ways to please her.
她一点也不知道，这些年来，她的丈夫一直使尽办法讨她的欢心。
I know a man near here who's wanted this horse of mine for years.
我认识附近的一个人，他多年来一直想要我的这匹马。
You must know that pools are expensive to build, and they usually take several years to complete.
你必须知道建造游泳池是很昂贵的，而且通常需要几年的时间来完成。
We really don't know a lot about how long a wood frog normally lives, probably just a few years but there is no evidence its longevity.
对于一只树蛙通常能活多久，我们确实知道得不多，可能只有几年，但没有证据表明它能长寿。
His brother Akbar said, "Akmal has struggled for many years with what we now know to be a serious mental illness."
他的兄弟阿克巴说：“阿克马尔多年来一直在与我们现在所知道的那种严重的精神疾病挣扎。”
We know, because of what we know about similar ancient desert lakes, we know that the lakes didn't last very long, from a few months to a few years on average.
而我们知道，出于我们对类似的古代沙漠湖泊的了解，我们知道这些湖泊并没有持续很长时间，平均从几个月到几年不等。
A common phenomenon of the modern society is that a growing number of people know little about their neighbors, although they live in the same community for many years.
现代社会的一个普遍现象是，越来越多人对他们的邻居知之甚少，尽管他们多年来一直生活在同一个社区。
I believe, from what I know of him, he was a bit of a rake. We bivouacked together on and off for nearly two years.
另外以我对他的了解，这是个有点浪子气息的家伙。我们断断续续地在一起露营了近两年。
Did you know this: after almost ten years in the United States, Li still speaks English with such a strong accent.
你知道吗：李在美国呆了近十年，说起英语来依然有那么浓重的口音。
Did you know this: after almost ten years in the United States, Li still speaks English with such a strong accent.
你知道吗：李在美国呆了近十年，说起英语来依然有那么浓重的口音。
On a hot day many years ago my the-middle school daughter Emily, one of the most optimistic people I know, was paddling with me in a cardboard boat race.
数年前一个炎热的日子里，我那上中学的女儿艾米丽——我所认识的最乐观的人之一，和我一起参加划纸板船比赛。
I don't know if that time apart was necessary for me to realize it, but I had more fun with her that week than I had in years.
我不知道那段分开的时间对我来说是否有必要让我想明白它，但那一周我与她在一起的欢乐比几年来的都多。
When I was researching this for a study a few years ago, I visited a couple of these typical limestone caves, and they were all very wet, you know, from streams and rivers.
几年前我做这项研究时，我探访了其中几个比较典型的洞穴，它们都很潮湿，你们也知道这是因为小溪和河流的缘故。
I know he is already 30 years old.
我知道他已经30岁了。
It seems that today's teenagers know about money planning even less than me years ago.
看来现在的青少年对理财的了解甚至比几年前的我还少。
As we know, China has developed quickly these years and it has become one of the most important countries in the world.
正如我们所知，中国这些年发展迅速，已经成为世界上最重要的国家之一。
Don't you know? She has been in a town school there as a volunteer teacher for over 2 years.
难道你不知道吗？她在当地的一所城镇学校支教了两年多。
After walking onto the stage, she began to speak, "I know you have been laughing behind my back for years. Today I have a great chance to make you all laugh in front of me. That's why I am here."
走上舞台后，她开口说：“我知道你们在背后嘲笑我好多年了。今天我有一个很好的机会让你们在我面前笑。这就是我在这里的原因。”
One of the dullest boys at a village school, more than thirty years ago, went up to repeat his lesson one morning; and, as usual, did not know it.
三十多年前，在一所乡村学校里，有一个十分愚笨的男孩，一天早上他上去复习他的功课；和往常一样，他都不懂。
Fast forward 10 years and everyone will know it.
快速向前推10年，每个人都会知道结果。
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