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。
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。
Here are some of the concepts that I use to overcome my dread of a difficult task.
我常用以下的方法来克服对艰巨任务的恐惧。
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。
When it comes to a difficult task like this, it's always good to ask just how far along it.
当提到困难时，一个不错的问题是离目标还有多远。
It is a difficult task to manage the meta-data in statistical and scientific database systems.
统计与科学数据库系统中的元数据管理是一项十分复杂的任务。
This can be a difficult task for the inexperienced engraver as good graver control is important.
这可以是一个良好的控制没有经验的雕刻更严重困难的任务是重要的。
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。
BARACK OBAMA set himself a difficult task for his extraordinary appearance in Berlin on Thursday July 24th.
7月24日，星期四，巴拉克·奥巴马为其在柏林的特别出场设立了一项困难的任务。
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。
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。
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。
Separating doting parents from their freshman sons and daughters has proved to be a difficult task and a worldwide story.
高校新生入学，护犊心切的家长对儿女难以割舍，这一点不分国界。 日前，美国也掀起了一场"家长团"送子上大学的风潮。
One of the hardest things a dad has to do is watch his young son or daughter take on a difficult task and fail at it.
为人父，最难的事情之一就是看着自己的子女迎难而上，失败而终。
This is a common theme throughout many of our work days. We keep avoiding a difficult task because we are afraid to face it.
这是贯穿在我们工作中的共同点：我们一直回避困难的任务，因为我们害怕面对它。
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。
Creating the look can be a difficult task, especially when cutting your own hair. Proceed with care to prevent unsavory results.
自己打造这款发型尤为困难，防止剪坏头发小心的动手吧。
As the number of services grows, tracking all these dependencies and evaluating the impacts of changes becomes a difficult task.
随着服务的数量增加，跟踪所有这些依赖关系并评估变更影响会变得越来越困难。
Washington now faces a difficult task in convincing contacts around the world that any future conversations will remain confidential.
华盛顿面临着一个艰巨任务，如何让世界范围内的联系人相信他们与华盛顿之间未来的往来内容能不被人知。
Questions of educational management, quality and relevance are critical and making the system more efficient has remained a difficult task.
教育管理、素质和相关性等问题严重，使得体制更有效成为一个很困难的任务。
Increasing the maximum upload file size is not a difficult task but developers need to know the best approach to overriding the default.
想增加这个尺寸的上限并没有什么难度，不过开发者需要知道怎样做才是最好的方法。
He said: "The feeling of having conquered something on my own is a major part of what drives me each day when I'm tackling a difficult task."
他说：“独自攻克难关所带来的那种感觉是我每天应对困难时主要的动力来源。”
He said: "The feeling of having conquered something on my own is a major part of what drives me each day when I'm tackling a difficult task."
他说：“独自攻克难关所带来的那种感觉是我每天应对困难时主要的动力来源。”
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