To water the trees was a difficult task for one man.
给这些树浇水对一个人来说是一项艰巨的任务。
The man in blue is too old to finish the difficult task in such a short time.
这个穿蓝衣服的人太年长了，不能在这么短的时间内完成这项艰巨的任务。
In fact, to learn with success is not a very difficult task if you follow some basic rules.
事实上，如果你遵循一些基本的规则，成功地学习并不是一件非常困难的事情。
As a ballerina, to embody the duality of the Swan Queen and the black swan can be a fiendishly difficult task.
作为一名芭蕾舞女演员，体现天鹅女王和黑天鹅的二元性可能是一项极其困难的任务。
In a study, researchers gave three groups of six-year-old children a difficult task to complete on a computer.
在一项研究中，研究人员给三组六岁的儿童安排了一项困难的任务，让他们在电脑上完成。
Testing Wicket web pages and components is not a difficult task.
测试Wicket的Web页面和组件并非难事。
The variety of information sources makes compiling statistics a difficult task.
各种各样的信息来源造成统计工作上的困难。
Finding two prime factors of a very large number is a difficult task for most computers.
对于大多数计算机来说找到一个非常大的数字的两个素因子是一件是难的事。
Developing Web applications is sometimes a difficult task when starting from scratch.
从头开始开发Web应用程序有时比较困难。
Yet it was a difficult task, and Thompson never quite achieved the results he hoped for.
但这种分析绝非易事，汤姆逊也远未达到他希望完成的结果。
And then comes the difficult task of changing your life so that it is what you want it to be.
然后面对那些能改变你生活的困难的问题使它变成你所希望的样子。
Currently, WFP must raise money "from scratch" each year - "a very difficult task," said Zoellick.
目前，世界粮食计划署每年都必须“从零开始”筹集资金——“这是一项艰巨的任务，”佐利克说。
Manchester City still harbour that ambition too, and face a more difficult task away to Villarreal.
曼城拥有同样的野心，下场客站比利亚雷尔则是更艰巨的任务。
Mister Sagan worked for many months on what to say in the message. It was an extremely difficult task.
萨根先生为这条信息应该说些什么忙了好几个月，这是一项非常艰巨的任务。
Pulling all of this together to create a true computational knowledge engine is a very difficult task.
把所有这一切放在一起去创造一个真正的知识计算引擎是一项非常艰巨的任务。
How to alter this bleak trajectory will be policymakers' most difficult task over the next decade.
未来十年，如何改变这一萧条的轨迹[注1]将是政策制定者们要面对的最棘手难题。
Said the Master, when asked his opinion, "I know of a more difficult task than any of those three".
他们就这个问题请教大师的意见，大师说道：“有项工作比这三个都要难。”
Indexing large amounts of unstructured data is a difficult task regardless of the technologies involved.
不管使用什么技术，索引大量非结构化数据是一件很艰难的任务。
Aspiring screenwriters, upon completing their script, have the difficult task of trying to sell the script.
有抱负的剧作者在完成剧本的同时还会想着怎样推销自己的剧本。
Keeping an operation running smoothly is a difficult task, and can absorb all of a new manager's time and energy.
保持业务顺利进行是项艰巨的任务，可能会耗费一位新任经理的全部时间和精力。
Instead, they opt for the much more difficult task of building their own microprocessor from individual components.
他们选择的是更加困难的任务——用分立器件搭建自己的微处理器。
It is a difficult task to start this article by defining "service" because of the variety of definitions it elicits.
由于存在多种不同的定义，通过定义“服务”来开始本文的讨论比较困难。
Regaining their reputation for competence is the most difficult task Republicans face. It is also the most important.
恢复公众对于自己能力的信任是共和党面对的最艰难任务，也是最重要的。
But it is proving to be a difficult task for civil protection officials and fire-fighting teams dispatched to the area.
但是，对于派遣到当地的民防官员和消防人员来说，这是一件十分艰难的任务。
Part of creating a craft business is the difficult task of knowing when to streamline production to keep up with demand.
建立一个手工艺生意有一个众所周知很难的部分，那就是要让生产跟得上需求。
Integrating different applications has always been a difficult task for various functional and technology related reasons.
整合不同的应用，一直以来都是一项与各种功能和技术的相关的艰巨的任务。
Integrating different applications has always been a difficult task for various functional and technology related reasons.
整合不同的应用，一直以来都是一项与各种功能和技术的相关的艰巨的任务。
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