If you are talking about a subject you know well, as I've just advised, prepared, preparing the speech itself should not be too difficult.
如果你正在谈论一个你很熟悉的话题，就像我刚才建议的，做好准备；准备演讲本身应该不是太难。
It's not easy material, and deserves to be read slowly and perhaps a couple times - much like any sophisticated treatise on a difficult but powerful subject.
它不是一个简单的阅读材料，值得用双倍的时间来细读品味——就像阅读那些涉及困难但重要主题的专业论文那样。
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。”
Stalking wildlife animal to take pictures of them is quite difficult, because in any moment your subject could run or worst attack you.
潜近野生动物进行拍摄是非常困难的，因为目标会不时地移动，或者也会狠狠地攻击到你。
The choice of physics was probably based on the fact that I found it the most difficult and challenging subject, and I still do to this day.
选择物理可能是因为我发现这门功课最难、最具有挑战性。直到现在我仍然这样认为。
As I try to outline my thoughts, the subject becomes more and more difficult.
要概述我的想法，却发现确定主题越发困难。
As I try to outline my thoughts, the subject becomes more and more difficult.
我努力清理思路时，主题变得越来越难讲述。
It sounds simplistic, but if you know you're going to broach a difficult subject on a particular day, get plenty of sleep and exercise in the period before.
这一条听上去太简单了。如果你知道某一天你将提出困难的话题，那么之前你需要充分睡眠和锻炼。
Well, first, addiction is exceedingly difficult to treat and devastatingly subject to relapse.
首先，成瘾症极度难以治疗，而且极度容易复发。
Sometimes, the suicidal element so saturates the story, it’s difficult to discuss the story as a text without considering frankly the subject, and its meaning to the writer.
某些时候，一个故事中自杀成分所占的比重太大，以至于在未就自杀这一主题进行思考并揣摩其对于作者的意义的情况下，从文学角度赏析这些小说相当困难。
Now I want to get into a subject which is quite difficult, and it has to do with change of orbits.
现在我要讲，一个比较难的，和轨道的，变化有关。
This turns out at the pace we teacher to be a difficult subject for some group of students.
我们老师很难把握对一群学生的,教学速度，Richard，Lawson教授和,教授都是教这门课的，working，with，Prof。
Perhaps there'll be a valuable learning experience, where someone teaches you about a difficult subject, and the penny finally drops.
或许他们会变成值得学习的经验，有些人会在某些非常难的科目上教导你，最后会破点小财。
That aspect of happiness takes willpower--another big subject neuroscientists have found difficult to study.
这方面需要毅力——这是另一大课题了，神经学家发现难以对其进行研究。
EVER since climate change became a subject for public discourse, economists have been making life difficult for environmentalists.
自从气候变化成为公众话题以来，经济学家一直在为难环境学家。
This special liquid must be subject to the same amount of pressure as the oil and gas surging upward — an extremely difficult undertaking.
这是一项艰巨的任务，因为下方油气翻滚，这种特殊液体必须要承受同等的压力。
It breathes some lifeinto an otherwise serious and difficult subject, giving it a pleasing contrastof facts, advice, and humor.
它以生动的气息阐述了严肃而深奥的话题，熔事实、忠告和幽默于一炉，让它们在对比当中尽显乐趣。
But avoiding the subject of money would be like saying, learningto walk is too difficult, so I’m not going to do it. Learn the basics.
但逃避今天的问题就好像说，学走路太麻烦了，所以我决定不走了。
But these people don't realize that minimalism is a difficult subject to explain because it is so easily misunderstood.
因此，简约的空间设计通常非常含蓄，往往能达到以少胜多、以简胜繁的效果。是个很难阐述清楚地话题，因为它很容易被误解。
In fact, Hayek hailed Strigl's work "for the simplicity and clarity of exposition of a notoriously difficult subject."
事实上，施特里格尔的著作被哈耶克誉为“对出了名的难题的简单而又清晰的论述。”
Philosophy is often described as a difficult subject. There are various kinds of difficulty associated with it, some avoidable.
常有人说哲学是很难的一门课。与哲学相关的难处，有各种各样的；有些是可以避免的。
But the arts also gave me a surprise, so Xiama Wei, really hurt my heart, pain pain, it is difficult subject, but the cry, tears stream can not be such a mess.
可是文科居然也给我来一个这样的下马威，的确伤到我的心，很痛很痛，很难受，不过不哭，眼泪不能这么乱流。
Operation scheme evaluation is not only an urgent task in today's military field but also a relatively difficult subject.
作战方案评估是当今军事领域一个急需解决又具有相对难度的课题。
This is not only a new welcome theory in the administrative law circle, but also a difficult subject needing to handle in the administrative practice and judicial practice.
这是行政法学理论界的新热点，也是行政执法实践和司法审判实践中遇到的亟待解决的问题。
The transient procedure, the character and the series resonance of RLC se-ries circuit are the most important and difficult subject of electrotechnics.
RLC串联电路的暂态过程、串联电路的性质和串联谐振是电工学课程中的重点和难点内容之一。
But by thinking constructively about how to broach a difficult subject, you might make it less painful and more productive, for everyone.
但是，通过建设性地去考虑如何提出一个困难话题，你也许为每个人减少了谈话的痛苦，增加了谈话的成果。
The technology of point targets detection in infrared image sequence is a difficult subject of information processing in recent years.
红外图像中点目标的检测技术是近年来信息处理研究的热点和难点之一。
On the other hand, it is not an easy subject. For many people, it is the most difficult subject they will ever encounter.
另外，经典力学并不是一门简单的学科，对于许多人来说，他可能是他们将要面对的最困难的一门。
The issue of pile-soil interaction is the research hotspot and difficult subject in pile foundation engineering for recently several years.
桩土相互作用问题是近年来桩基工程中的研究热点与难点课题。
The issue of pile-soil interaction is the research hotspot and difficult subject in pile foundation engineering for recently several years.
桩土相互作用问题是近年来桩基工程中的研究热点与难点课题。
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