艰难

You have been commissioned to finish that difficult task.

你被任命去完成那件艰难的任务。

And it's a very very difficult competition.

那是一种非常非常艰难的竞争。

Here was the compleat modern misfit:the very air appeared to poison him;his every step looked treacherous and hard won stephen Schiff

这正是现代错位的一个典型例子：这里的环境在毒害他；他的每一步都象是跋涉但还是艰难取胜

Here was the compleat modern misfit:the very air appeared to poison him;his every step looked treacherous and hard wonStephen Schiff

这正是现代错位的一个典型例子：这里的环境在毒害他；他的每一步都象是跋涉但还是艰难取胜

But getting one's hands on this new-fangled "technology" became a whole lot harder in 1873, when Congress passed the Comstock Law, prohibiting the transportation of obscene material like prophylactics and pornography.

但是在1873年，国会通过了康斯托克法，该法案规定禁运避孕药和淫秽出版物之类的色情物品，该法通过后，为新品硫化橡胶取得＂技术＂支持也就变得越发艰难。

Renaissance craftsmen, moreover, would have faced severe technical challenges in silvering and sealing a concave mirror, which required the application of hot tar and pitch on the outside of the glass.

文艺复兴时代的工匠在涂银与装置凹面镜时，还要面对更多艰难的技术挑战，那需要在玻璃表面施予滚烫的焦油与沥青。

Although it is really difficult, I have no choice. I only can put concentration on my study.

我会坚持不会放弃，尽管这真的是十分的艰难，但也是别无选择的了，我只能集中精力在自己的学业上。

As the Organizer of the Shanghai Epo, we take charge of the pailion construction, participation serice, eents preparations, forum organization and Epo operation, undertaking arduous tasks We are to gain eperience since this is the first time for us to hold such a large-scale and long-duration world eposition During the preparation, we hae been learning from host countries and cities of preious world epositions as well as the organizers of such large-scale eents as the Olympics We also listen to the instructions of the BIE, refer to the eperience of all countries, and strie concertedly with the participants to stage a satisfying Epo in 2010 in line with the spirit of the world eposition "understanding, munication, union and cooperation"

作为本届世博会的组织者，我们承担着场馆建设、参展服务、活动准备、论坛组织、会期运营等各项工作，义务十分艰难。由于是第一次举办如此大范围、长时光的世博会，我们还缺少经验。在筹备进程中，我们一直保持向举行过世博会的国度和城市认真讨教，向奥运会等其他大型活动的主办方虚心学习，主动人取国际展览局的领导，尽力吸取各国经验，凝集各方智慧，秉持世博会"欢聚、沟通、展现、合作"的精力，积极与各参展方携手尽力，共同办好2010年世博会。

They were condemned to a life of hardship .

他们不得不过着艰难的生活。

Open pure English edition Netscrap, menu still has the place that visits not to understand (had not read a book well because of the university, english also is to deal with take an exam and learn), with curiosity and enthusiasm, I have a good swim very hardly in the network, this the website on me is Www.yahoo.com, webpage, it is English completely, click east, confect is attacked, also understanding this fellow at that time is to use those who what do after all!

打开纯英文版Netscrap，菜单还有看不懂的地方(因为大学没有好好读过书，英文也是为了应付考试而学)，凭着好奇和热情，我很艰难地在网络中"畅游"，这次我上的网站是www.yahoo.com，网页，全是英文，东点击，西点击，当时也没有读懂这家伙到底是用来做什么的！

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。