很难的

This is a difficult problem, at the same time it is very interesting.

这是个很难的问题，但却很有趣。

It make me remember a idiom that is::"relieve the besieged by attacking the base of the besieger".

改变，总是很难的事，很多都是靠习惯的慢慢养成，这也很难

It is difficult to predict the time to debug the code, hence it is difficult to schedule.

这是很难预测的时间来调试代码，因此它是很难的时间表。

Bren: June bug, that is a tough, tough thing to do. It's probably tougher than you can understand right now.

布伦：金龟子，这是一件很难很难的事情，比你现在想象的要难得多。

It is a very difficult step for me, but it did not knock me down.

那是很难的一道卡，但还是没有难住我。

To one's face 当着某人的面 A:It's hard to tell someone she's wrong to her face.

A：当着一个人的面告诉她说"她错了"是很难的。

That influential artists 2, age is still hours 3, Please give my greetings to your parents 1, his parents made him very happy things 2, a lot of houses have been built to meet the needs of the people 3, Lincoln is considered one of America's greatest president 4, in the prompt at any time, he has published two novels of the 5, to his 18-year-old, I believe that he was the university examinations into the 6, and sometimes it is hard to refuse the invitation of a friend 7, can turn the radio tube smaller 8, many students shut themselves up in a room to learn 9, most of them have experienced the Second World War 10, many people patronize the Carnival 11, the number of students in this school the school in excess 12, I can not help but laugh with them 13, to hear the exciting news, I could not help but jumped up happy 14, who, as a wise leader will be remembered 15, this book belongs to you do 16, master a foreign language is very difficult to 17, I lived in a remote house, but it does not feel lonely 18, can you imagine JOHN do like fishing in the river 19, he was very hard to learn.

问题补充：后面的 1、他父母对他所作的事情很满意 2、已经建造了好多房子来满足人民的需要 3、林肯被认为是美国最伟大的总统之一 4、在提示随时，他已经出版了两本小说了 5、到他十八岁时，我相信他会考进那所大学 6、有时拒绝朋友的邀请真的很难 7、能不能把收音机管小一点 8、许多学生把自己关在房间里学习 9、他们中的大多数人经历过第二次世界大战 10、许多人光顾了嘉年华 11、这所学校的学生数多余那所学校 12、我忍不住和他们一起笑了 13、听到这令人兴奋的消息，我忍不住开心的跳了起来 14、他作为一位睿智的领导人将被永远铭记 15、这本书属于你吗 16、掌握一门外语是很难的 17、我一人住在偏僻的房子里，但并不感到孤单 18、你能想像JOHN在河边钓鱼的样子吗 19、他很努力学习。

English prepositions are difficult to almost all Chinese teachers and students of English, but they are not so difficult for my sister.

英语介词对于中国几乎所有学英语的教师和学生来说都是很难的，但对于我姐姐来说并不算难。。

Smith的翻译:……gazes in astonishment at the passionate head of Archilochus, the warlike servant of the muses, as he is pursued wildly through existence

Smith的可以翻译为&当他在生存中被疯狂的追击之时&（这句话的含义很难把握，所以如此拙劣的翻译很难穷尽其意思），Kaufmann的似乎可以翻译为&疯狂的生存着的、斗争着的&，和后面的warlike一起构成修饰成份。

For this reason I would advise you to buy, when you can, the lovely Complete Edition of Jacobsen's works, which contains all of these.

性，是很难的。可是我们份内的事都很难；其实一切严肃的事都是艰难的，而一切又是严肃的。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。