It's hard to understand why they would not be affected, whereas dinosaurs were left too crippled to cope, especially if, as some scientists believe, dinosaurs were warm-blooded.
很难理解为什么它们不会受到影响，而恐龙却因为残疾而无法生存，尤其是如果恐龙像一些科学家认为的那样是温血动物。
From the outside looking in, it's hard to understand. From the inside looking out, it's hard to explain.
由外向里看，难以理解明白。由里往外看，难以解释清楚。
It's hard to understand how he works from the outside. He's certainly different from the others in the media.
他的工作方式让人很难捉摸，在媒体看来，他显然是个异类。
If I don't know where the input is coming from, it's hard to understand why I'm generating a particular set of output.
如果我不知道输入来自哪里，那么很难理解为什么我正在生成这一组特别的输出。
This is really sick; it's hard to understand that what kind of people would hurt an animal when they are look into their innocent eyes.
这是真的病了，很难明白，什么样的人会伤害动物当他们看着他们的无辜的眼睛。
Speaker 1: No, the first. I …I think … well … it's hard to understand why people should want to earn their living by fighting, but I think I can.
发言人1：不，首先，我想…或许对于为什么有些人通过战斗来谋生会感到很难理解，但是我想我可以。
It's hard to imagine that many people are dumb enough to want children just because Reese and Angelina make it look so glamorous: most adults understand that a baby is not a haircut.
很难想象，许多人仅仅因为瑞茜和安吉利娜让养育孩子看起来如此迷人就愚蠢地想要孩子：大多数成年人都明白，养孩子不是剪头发那样简单。
It's not hard to understand that each culture passes on its ideas and thoughts through words.
不难理解，每种文化都通过文字来传递其观念和思想。
It's hard to learn a concept, but once you understand it, that knowledge can be applied repeatedly.
学习一个概念绝不容易，但一但你真正理解了它，知识便可以重复利用。
"Fame's a bitch," Pitt once told an interviewer, and it's not hard to understand why.
“名气是件讨厌的事。”布莱德·彼特曾经这样告诉一位采访者，而这并不难理解。
However well you understand the complexity of choice, and the trade-offs it involves between short - and long-term gains, it's hard not to make certain mistakes.
不管你如何了解选择的复杂性，以及短期和长期的利益之间的权衡，你还是很难避免犯某些特定的错误。
It's not hard to understand why: almost every week brings another scientific report predicting impacts sooner and more devastating than we were previously expecting.
要理解其中的原因并不困难：几乎每个星期都会有一份新学术报告预测到比我们以前预测的更早、破坏性更大的影响。
It's also hard to know what these pheromones might be and how we sense them, so researchers understand little about them.
另一个问题同样很困难：我们不知道这种信息素可能是什么，也不知道如何去感知它，因而研究者们对它知之甚少。
"I know it's hard to say goodbye, but you'll understand it someday yourselves," the magnificent whale said as its 102-foot-long body breached the water.
“我知道要说再见很难，但是有一天你们会明白的，”巨大的鲸鱼说道，此时它102英尺长的身体正拍打着波浪。
If you don't understand these concepts, it's hard to move forward, please re-read those posts above.
如果你不理解这些观点，那就很难往下继续，请将上述文字再读一遍。
However, it's not that hard to understand once you study it for a few minutes.
然而，只要您学习几分钟，要理解它也不那么困难。
It's not hard to understand why Henry Ford loved the Model t just as it was. After all, the sturdy black car had made him rich and famous.
不难理解为什么亨利·福特对t模型情有独钟，毕竟是这强悍的黑色汽车让他名利双收。
I understand that it's hard when you are asked to protect the American people against people who have no scruples and would willingly and gladly kill innocents.
我理解，当你们被要求去保护美国人民，而你们的敌人则是些良心上没有任何顾忌，愿意并且乐于杀戮无辜的人，你们的任务很艰巨。
It's very hard to understand in the beginning that the whole idea is not to beat the other runners.
开始，我们很难理解对于一个跑者来说，跑步不是为了去击败其他对手。
Then it's not hard to understand why the story of Zhen Huan is even seen as a survival guide for newcomers in the workplace.
这样一来，就不难理解为何人们甚至将《甄嬛传》视为职场新人生存指南了。
But it's hard for most of the students to understand due to its abstract nature, so it is the duty of all the teaching staffs to look for more interesting ways for Logic teaching.
但其形式的抽象性给许多学者带来困惑，把逻辑教学趣味化是逻辑教育工作者的义务。
This technique is called dynamic soaring. It's kind of hard to understand the first time through.
这项技术是所谓的动态飙升，它的种很难理解第一次通过。
I think it's hard for anyone to really understand what it's like to have your entire community and culture displaced.
大家很难体会整个聚落和文化被迫搬迁的滋味。
I think it's hard for anyone to really understand what it's like to have your entire community and culture displaced.
大家很难体会整个聚落和文化被迫搬迁的滋味。
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