We also know that a long time without change or challenge can lead to boredom, and physical and mental strain.
我们也知道，长时间没有变化或缺乏挑战会导致无聊，造成身体和心理上的疲惫。
In such studies, researchers would need to follow groups of children with and without music lessons over a long period of time—even if the assignments are not completely random.
在此类研究中，研究人员需要在很长一段时间内对上音乐课和未上音乐课的不同小组的儿童进行追踪——即使任务并不是完全随机的。
They can survive a long time without food, too.
它们也能在没有食物的情况下存活很长时间。
It's not known when Mars was found and by whom Mars has been known for a very long time, and one of the planets that can be seen from the Earth without a telescope.
在很长一段时间里，没人知道火星是什么时候被发现的，谁发现的，也不知道有一种行星可以不用望远镜就能从地球上看到。
Our bodies have a built-in survival mechanism to conserve calories when we go for a long period of time without eating.
当我们长时间不进食，我们身体有个内在的生存机制会保存热量。
A new study finds that going long periods without sleep can lead to a sort of "sleep debt" that cannot simply be undone with a little extra snoozing from time to time.
一项新研究发现长时间不睡觉能够导致一种“睡眠负债”，这个问题不能简单的被时不时的额外的小睡所解决。
"Sometimes I wake up in the middle of the night without any reason and feel sick, especially if I haven't eaten in a long time," said Wang, adding that he rarely goes to a hospital.
“有时我会在半夜醒来，没有任何原因，只是感到不舒服，特别是如果我长时间没有吃东西时，”王还说他很少去医院。
We can go years without chatting, then I’ll pop back into the city and call them to meet up — that’s sort of the way it’s been for a long time now.
我们可以好多年不联系,然后我急匆匆的回到原来的城市时叫他们出来见面-这么多年来都这样。
We can go years without chatting, then I'll pop back into the city and call them to meet up - that's sort of the way it's been for a long time now.
我们可以好多年不联系，然后我急匆匆的回到原来的城市时叫他们出来见面-这么多年来都这样。
With the new method, "Imaging is possible over a very long time without damaging the region of interest," said Juergen Jung, operations manager of the Schnitzer lab.
利用这种新技术，“使在不损害需要观察部位的条件下长时间成像成为可能，”施尼策尔的实验室的执行经理JuergenJung表示。
"They are like buses," says Williams. "Sometimes a long time will go by without one, and then two will come along in quick succession."
威廉姆斯说，“它们就像公共汽车，有时很长时间不来一辆，然后接连来两辆。”
When I joined Google as its first visual designer, the company was already seven years old. Seven years is a long time to run a company without a classically trained designer.
当我加入Google并成为公司的第一位视觉设计师时，Google已经七岁了，七年对于一个没有经受过一流训练的设计师的公司来说是漫长的。
Anticipate Their Moves: When you are with someone for a long time, you know what they will want or need without them even asking.
猜测她的举动：当你和她在一起较长时间之后，你应该不需要她开口就知道她想要或者需要什么。
Entertainment and information (especially when it's accurate) aren't bad things, but with the Web, we could go for quite a long time without ever having to directly interact with another human being.
娱乐与与信息(特别是当它变得不准确时)不是有害的，但有了互联网，我们能够渡过一段相当长的，没有与他人进行直接交流的时间。
I'm lonely only when I am overtired, when I have worked too long without a break, when from the time being I feel empty and need filling up.
只有在我过度劳累的时候，在我长时间不断工作的时侯，在我感到内心空虚，需要充实的时候，我才会感到寂寞。
“The same thing as in Arizona has been in place in Japan for a long time without much criticism,” says my cousin and lawyer Genichi Yamaguchi.
我的堂兄（或弟）及律师山口元一说，”类似亚利桑那洲的法规已经在日本实行了很长时间，而从没有受到批评。
Some trees can survive a long time without water. Think of trees that grow in the desert.
有些树木在缺水的情况下也能存活很长时间，例如沙漠中生长的树木。
He added: "Twenty years without winning it is a long time." I'm sure that day will come and when it does it will be fantastic for the players and the fans.
他补充道：“二十年无一冠是很长久的时间，我确信这一天会到来，等那一天来到的时候，他将成为球迷和球员的节日。”
When someone you know comes to visit unexpectedly and inconveniently, often staying for a long time, and you can't tell them to leave without being rude.
你所认识的某人突然来找你，通常都要待上很长时间，虽然造成你的不方便，但是也不愿意显得无理请他离开。
Without any available cohort studies to test exposure over a long period of time, though, they have had to rely on lab studies, which failed to find any clear or reproducible biological effects.
没有任何可用的队列研究，以测试长时间暴露在电磁场中的后果，他们不得不依赖实验室研究，目前未找到任何明确或可复制的生物效应。
He looked at them a long time in his hand, without saying a word, but at last he pulled out his purse and put them in.
他看着手中的金子很长时间，没有说话，但是最后他打开他的钱袋把它们放进去。
This can lead to a shortage of available rooms, because users have reserved them for very long periods of time without actually needing them.
这可能会导致可用房间短缺，因为用户预订了很长的周期但没有实际使用它们。
"They say she's ungrateful, that without them the magazine would have been closed a long time ago," a friend of Mr. Wang's said.
“他们说她忘恩负义，没有他们杂志早关门了。”王博明的一个朋友说。
Miniature fuel cells can last a helluva long time (30 days without recharging on a phone) but no one has quite figured out how to effectively build 'em.
微型燃料电池可以维持供能相当长的时间（在手机中可以30天不充电）但是目前人们还没有找出如何有效生产燃料电池的方法。
The year after Tambora’s explosion was known for a long time as the “year without a summer”.
坦博拉火山爆发后漫长的十年被称为“没有夏天的年月”。
On the other hand, in Node requests can extend for long periods of time without sacrificing performance or scalability, as it's a fully asynchronous, single-threaded, single-process framework.
另一方面，不用牺牲性能和可伸缩性，Node的请求就可以延长一段时间，因为Node是个完全异步、单线程、单进程的框架。
I'm lonely only when I am overtired, when I have worked too long without a break, when for the time being I feel empty and need filling up.
只有在过度劳累时，我才会感到孤独，心也像被掏空了一般。
I'm lonely only when I am overtired, when I have worked too long without a break, when for the time being I feel empty and need filling up.
只有在过度劳累时，我才会感到孤独，心也像被掏空了一般。
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