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。
Students had to complete a difficult mental math task in front of the same upper-year students.
学生们必须在同一批高年级学生面前完成一项艰巨的心算任务。
To produce a complete code of laws would be a difficult task.
制定完全的法典将是一项困难的任务。
You should gather yourself up to complete a difficult task.
你应该打起精神去完成一项艰巨的任务。
Difficulties will follow, in the face of new targets, new pressure every time we have to complete the task more difficult, so the cycle.
困难会接踵而来，面对新目标，新压力，我们不得不一次比一次更艰难去完成任务，如此周而复始。
Whether (it is) difficult or not, we will try our best to complete the task.
不管任务是否艰巨，我们都要尽力去完成。
Unless you cooperate with each other, it is difficult to complete the task.
如果你们不相互合作，就很难完成任务。
They did not say difficult, the older generation in his family to complete the unfinished task.
他们不谓艰难，一代代在完成着自己家族没有完成的任务。
I find it difficult to complete my task.
我发现要完成我的任务很难。
In pervasive computing environment, a single service is very difficult to meet the user's task needs, so its need to use service composition to complete the complex tasks.
普适计算环境中的单一服务很难满足用户的任务需求，需要通过服务的组合来完成用户的复杂任务。
In pervasive computing environment, a single service is very difficult to meet the user's task needs, so its need to use service composition to complete the complex tasks.
普适计算环境中的单一服务很难满足用户的任务需求，需要通过服务的组合来完成用户的复杂任务。
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