It is easy to learn paper-cutting but very difficult to make it perfect.
剪纸学起来很容易，但要做到完美却很难。
The Large expanse of granulose grows, does not have the inflammation, but very difficult to retreat.
成片小粒生长，无炎症，但很难退去。
The real can never equal the imagined, for it is easy to form ideals but very difficult to realize them.
事实永远无法满足想象，因为理想容易树立，实现则很难。
In the regulations and contracts I have translated, they often come out as something easy but very difficult to get a precise translation.
我翻译过的各种规章和合同当中，这类词经常是看来简单却又不容易说准确的。
It's based on the idea of mathematical "trap-door" functions, which are easy to compute in one direction but very difficult to compute in the reverse direction.
它所基于的理念是数学上的“trap - door”函数，它可以沿着一个方向轻松地进行计算，但是很难从相反的方向进行计算。
Using Z language it is convenient to describe the data transform of operations of system, but very difficult to describe the temporal relations of operations of system.
语言可以方便地描述系统操作的数据转换，却很难描述系统操作间的时序关系。
The his highness is a heroic, but very difficult organic visit relatives from top the battlefield kill an enemy to cut will, therefore, you don't understand the heart of their warriors.
殿下是英豪，却很难有机会亲自上战场杀敌斩将，因此，你并不懂他们的战士之心。
You can train it to flap its wings to escape a situation but it's very difficult to get it to flap its wings for food.
你可以训练它扇动翅膀以逃避某种情况，但要让它扇动翅膀获取食物是非常困难的。
The Purdue scaffold looks like a very interesting approach—it's certainly an advance—but until it's been tested in vivo, it's difficult to comment further.
普渡的支架看起来是个非常有趣的方法——这肯定是一个进步——但是，在进行体内测试之前，很难进一步评判。
Not only will those skills be actually integrated into the curriculum but they will be very important to have in the future because they are difficult to automate.
因为这些技能很难自动化，它们不仅会被整合到课程中，在未来也将变得非常重要。
It's very easy to fall into the habit of smoking, but extremely difficult to get rid of it.
要养成吸烟习惯很容易，但要戒掉却极其困难。
But he had only three fingers on each hand, so it was very difficult for him.
但是他每只手只有三个手指，所以这对他来说非常困难。
Depending on your personality, whether you're introverted or extroverted, I realize that this approach could be very difficult; but it is very effective.
根据你的性格，不管你是外向还是内向的，我发现这样开头可能是十分艰难的，但实际上是很有效的。
But understanding the output and how it works could be very difficult.
理解输出以及其工作方式可能非常困难。
The reality gap makes it extremely difficult to make anything but very long-term predictions that can be difficult to exploit, even if they are correct.
即使他们是正确的，由于现实差距的存在，他们很难赚到钱，他们拥有的只是很难实现的长期预测目标。
I tried the best I could to translate his Russian to Spanish, but it was very difficult for me who only speaks a little Russian.
我尽最大努力把维克托的俄语翻译成西班牙语，但是困难的是，他只能说一点俄语。
His colleagues said "This kind of subject is difficult even to postgraduates, but is very easy for him."
他的同事们说，“这样的科目，即使对于研究生来说也是极有难度的，对他而言却是小菜一碟。”
I partly agree with you. Buying stocks is not difficult, but making money consistently from buying stock is very difficult.
我部分同意你，买股票并不难，但是买股票一直赚钱就很难了。
But measuring these changes in rainfall over the ocean is very, very difficult to do. But salinity is actually an important parameter that gives us an indication of what might be going on.
许多天气预报模型暗示，当气温升高的时候，水循环会发生变化，但是，我们很难在海洋上测量降雨的变化，不过，海洋中的盐分水平实际上是一个重要参数，能表明海洋上降雨的变化。
"The patient was brave, " she added. "She was stable in facing the world, but it was very difficult for her to go out of the house."
她很勇敢，在面对这个世界的时候很镇静，但是，走出自己的房子对她来说异常的艰难
As he told MTV last month, "I do have a goal in this lifetime to be the greatest artist of all time, [but] that's very difficult being that I can't dance or sing."
他上个月告诉MTV，“我在此生确实有一个目标 ——成为有史以来最伟大的艺术家，（但）这是非常困难的因为我不会跳舞或唱歌”。
“I am with his mother now and she is very upset, ” Zhang said. “There are many friends and relatives here, but this is very difficult for them.
“我现在正和他的母亲在一起，她很悲痛”，张说，“有很多亲人朋友和我们在一起，但是这件事对于他们而言也很难过。”
It is still not known why the control mechanism breaks down in some people, but the results are very difficult to treat.
但我们还是不知道，在某些人群中这样的控制机理失效的原因，只知道这样的疾病极难治疗。
I debated whether to include session recommendations here for those who want to attend, but it's very difficult to do so because THE expert from IBM is presenting on each topic.
我认为在本文中无法为那些想参加的人提供会议推荐内容，实际上很难做到这一点，因为每个主题都会有来自IBM的专家出席。
However, it turned out later that large Numbers of Japanese housewives were doing that. But it was very difficult to stop housewives from doing carry trades.
但是，后来人们发现，实际上是大量的日本家庭主妇在做这件事情，而要想制止家庭主妇做套利交易，难度非常大。
However, it turned out later that large Numbers of Japanese housewives were doing that. But it was very difficult to stop housewives from doing carry trades.
但是，后来人们发现，实际上是大量的日本家庭主妇在做这件事情，而要想制止家庭主妇做套利交易，难度非常大。
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